• Latest
  • Trending
  • All
Tall Oil Rosin Production, Processing | Handbook

The Byproduct That Became a Business: Why Tall Oil and Rosin Are Among the Most Versatile Industrial Chemicals You Have Never Heard Of

October 1, 2026
Ultra Thin Copper Foil Manufacturing: Business, Market

Ultra Thin Copper Foil: Manufacturing Business Ideas, Market Opportunity, and Investment Guide for Indian Entrepreneurs

September 30, 2026
Specialty and Advanced Materials Business Ideas featuring a high-tech manufacturing facility, advanced composite materials, carbon fiber sheets, polymers, industrial material samples, and innovation-focused business opportunities.

Specialty and Advanced Materials Business Ideas in India: 5 Profitable Manufacturing Opportunities

September 30, 2026
Project & Profile
Household and Consumer Products Business Ideas in India with manufacturing setup, home care products, personal care products, packaging, and consumer goods business opportunities.

Household and Consumer Products Business Ideas: 5 Profitable Manufacturing Opportunities in India

September 30, 2026
Powerful Paints, Coatings and Adhesives Business Ideas in India featuring paint manufacturing, industrial coatings, adhesive products, color swatches, and chemical business opportunities

5 Powerful Paint and Coatings Business Ideas Business Ideas in India

September 30, 2026
Animal Feed Business Ideas in India featuring cattle, poultry, pig farming, animal feed grains, pellets, and modern feed manufacturing plant

Animal Feed Business Ideas: 5 Profitable Manufacturing Units in India

September 30, 2026
Meat Poultry and Fish Processing in India: Business Guide

Meat, Poultry & Fish Processing in India: The Complete Business and Technology Guide

September 29, 2026
Electrical and Electronic Products Business Ideas in India

Electrical and Electronic Products Business Ideas: 5 Profitable Units in India

September 29, 2026
Manufacture of Pan Masala, Tobacco and Tobacco Products

India’s Tobacco Products Industry: Scale, Complexity, and the Business Opportunity Most People Overlook

September 29, 2026
Biological Waste Treatment in India: Business Opportunities

India’s Waste Is Worth More Than You Think — Here Is Why Biological Treatment Is the Business Opportunity of the Decade

September 28, 2026
Manufacturing Empire

12वीं फेल से ₹100 करोड़ की फैक्ट्री तक: इस छोटे शहर के Entrepreneur ने कैसे खड़ी की करोड़ों की Manufacturing Empire?

September 28, 2026
Hidden Manufacturing Opportunity

₹10 लाख से शुरू हुआ ये Business आज करोड़ों में: भारत के इस Hidden Manufacturing Opportunity ने बदल दी Entrepreneurs की कमाई

September 28, 2026
Pine Chemicals and Oleoresin: Market, Business & Processing

Pine Chemicals & Oleoresin: Why This USD 10 Billion Industry Deserves Your Attention Right Now

September 25, 2026
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Thursday, October 1, 2026
  • Login
Entrepreneur India Blog
  • Home
  • About
  • Books
  • Business Ideas
  • Contact
No Result
View All Result
Entrepreneur India Blog
No Result
View All Result
Home Chemical Industry Business Opportunities

The Byproduct That Became a Business: Why Tall Oil and Rosin Are Among the Most Versatile Industrial Chemicals You Have Never Heard Of

Author: Dr. H. Panda  |  Publisher: Asia Pacific Business Press Inc. (NPCS)  |  Price: ₹1,575 / US$ 150

by Diksha Garg
October 1, 2026
in Chemical Industry Business Opportunities
0
Tall Oil Rosin Production, Processing | Handbook

Handbook on Tall Oil Rosin Production, Processing and Utilization by Dr. H. Panda

491
SHARES
1.4k
VIEWS
Share on FacebookShare on Twitter

Tall Oil Rosin Production, Processing | Handbook

Table of Contents

Toggle
  • A Chemical Most People Have Never Heard Of — That Is Everywhere
  • The Industrial Chemistry of Tall Oil: What It Is and What It Produces
  • Market Demand and Business Potential: Where the Opportunity Lies
  • Tall Oil in Mining, Petroleum, and Flotation
  • Handbook on Tall Oil Rosin Production, Processing and Utilization: What This Book Contains
  • Coverage Across the Full Tall Oil Value Chain
  • Who This Book Is Written For
  • Why This Is the Reference You Need
  • Book Details at a Glance
  • Price: ₹1,575 (India) | US$ 150 (International)
  • Your Investment Deserves the Right Opportunity
    • Frequently Asked Questions

A Chemical Most People Have Never Heard Of — That Is Everywhere

Most people working with paints, rubber, adhesives, printing inks, paper, lubricants or detergents have never heard of tall oil. Their procurement managers have. Their process chemists have. And the manufacturers who supply those industries take a close eye on it as it quietly underlies a surprising number of everyday industrial products.

Tall oil is the byproduct of the kraft pulping process used to make paper and paperboard from wood. When pine wood is processed in the kraft process, resins, fatty acids, and other organic compounds are released and concentrated in the black liquor. This soap fraction, skimmed off and acidified, results in a crude tall oil which is a complex mixture of resin acids (rosin), fatty acids, and neutral compounds — one of the most chemically versatile bio-based industrial raw materials available at commercial scale.

In a world seeking to invest in renewable feedstocks, lower dependence on petrochemicals, and embrace circular economy models, tall oil occupies a uniquely advantageous position. It is renewable (from wood), is a byproduct of an existing process (no raw material cost for the upstream supply), and has a chemical composition (oleic and linoleic fatty acids and resin acids) that opens up a large number of industrial applications.

The Industrial Chemistry of Tall Oil: What It Is and What It Produces

Crude tall oil (CTO) recovered from kraft mill black liquor consists primarily of three components: resin acids (abietic acid and its isomers, collectively known as rosin), fatty acids (oleic, linoleic acids in roughly equal proportion, plus smaller quantities of saturated and polyunsaturated acids), and neutral compounds (sterols, wax alcohols, hydrocarbons, and esters).

By vacuum fractional distillation, CTO is separated into the various components. The fatty acid fraction (TOFA) is used in a wide range of industrial applications. The rosin fraction has applications in paper sizing, rubber compounding, adhesives and printing inks. The pitch fraction has applications in asphalt products and as a defoamer base. From TOFA, an entire family of derivative chemicals can be produced: dimer acids, azelaic acid, pelargonic acid, polyamides, amines, esters, etc.

The depth of its derivative chain is the reason why tall oil is an unusually attractive industrial raw material. A kraft pulp mill operator who recovers and processes tall oil is not just selling a byproduct, but is in fact a chemical platform that feeds into paint, rubber, paper, adhesives, detergents, textiles, petroleum processing, mining flotation, pharmaceutical applications — at the same time.

Market Demand and Business Potential: Where the Opportunity Lies

Tall Oil in Paper Sizing

One of the largest single applications for rosin (the resin acid fraction of tall oil) is as a paper sizing agent. Internal sizing with rosin imparts water resistance to paper and paperboard, which is critical for packaging, printing and writing paper grades. India’s paper and paperboard industry has been growing steadily, driven by e-commerce packaging demand, food service packaging, and the overall shift from plastic to paper-based materials. All of these are drivers of demand for rosin-based sizing materials.

Rosin sizing remains relevant and commercially important, despite the availability of synthetic sizing agents. It has its own performance characteristics, cost profile, and compatibility with recycled fibre systems, making it competitive across a wide range of paper grades. For manufacturers looking to supply rosin sizing materials (paste size, dry size or emulsion size), the Indian paper sector represents a stable and growing customer base.

Tall Oil in Alkyd Resins and Surface Coatings

Tall oil fatty acids are a feedstock for alkyd resin production. Alkyd resins are the backbone of oil-based paints, primers and industrial coatings — markets that continue to grow in India alongside the construction, infrastructure and automotive sectors. The versatility of TOFA in alkyd formulations (short-oil baking alkyds, medium-oil alkyds, long-oil alkyds, rosin-modified alkyds for specific applications) makes them a preferred raw material for resin manufacturers.

India’s coatings industry has been growing at a healthy clip, with both organised sector players and large unorganised decorative paint segment driving consumption. Manufacturers with access to TOFA and technical knowledge of alkyd formulation would find themselves well positioned in this market.

Tall Oil Rosin Production Processing and Utilization Handbook
Handbook on Tall Oil Rosin Production, Processing and Utilization by Dr. H. Panda

Dimer Acids and Polyamide Resins

The dimerisation of TOFA produces dimer acids (C36 dibasic acids) for polyamide resin production. These polyamides serve as hot-melt adhesives, printing ink vehicles, epoxy curing agents, can-seam sealants, etc. The global polyamide resin market is substantial and growing, with applications in packaging, printing and specialty adhesive. TOFA is the preferred and most economical feedstock for dimer acid production — manufacturers who can process TOFA to dimer acids would access a high-value chemical segment.

Azelaic and Pelargonic Acids

The ozonolysis of oleic acid in TOFA produces azelaic acid (C9 dibasic acid) and pelargonic acid (C9 monobasic acid). Azelaic acid has significant pharmaceutical applications (acne treatment formulations) and serves as a polymer building block for plasticizers and lubricant esters. Pelargonic acid finds use in lubricants, plasticizers, perfume bases, fungistats, etc. Both are commercially valuable specialty chemicals produced from a renewable, bio-based feedstock — a positioning that aligns well with the direction of global markets.

Tall Oil in Mining, Petroleum, and Flotation

Tall oil’s use as a flotation collector in mineral processing (recovering copper, lead, zinc from low-grade ores) gives it a relevance in the mining chemicals segment. Its applications in petroleum processing (oil well fracturing fluids, drilling muds, demulsifiers, corrosion inhibitors, lubricating oil additives) add another distinct customer segment. Its use as a defoamer in fermentation, paper-making, phosphoric acid production gives it industrial process chemistry applications.

This breadth of application across industries makes tall oil processing not hostage to any single sector’s cyclicality. Demand for tall oil derivatives tends to be diversified across construction, mining, paper, rubber, paints and agriculture — a portfolio of demand which is inherently more stable than reliance on a single end-use sector.

Handbook on Tall Oil Rosin Production, Processing and Utilization: What This Book Contains

Written by Dr. H. Panda and published by Asia Pacific Business Press Inc. (an associate of NIIR Project Consultancy Services), this 480-page handbook is the most comprehensive English technical reference on the subject of tall oil and rosin — from production, analysis, chemistry, processing to cover the full range of industrial applications.

For a subject that is genuinely specialised and in which reliable technical literature is scarce, this coverage in a single volume is unusual and commercially significant — drawing on primary research, industrial process data, and production experience at kraft mills. The book covers the subject from the chemistry of tall oil fatty and resin acids through to specific application formulations and end-use performance data for each major product category.

Coverage Across the Full Tall Oil Value Chain

The handbook systematically covers:

  • History and introduction of tall oil — from early discovery to modern kraft integration
  • Production process and recovery — black liquor soap recovery methods, soap skimmer design (including Stokes’ Law analysis of separation), air injection effects, heavy liquor recovery, monitoring of recovery efficiency
  • Composition and properties of crude tall oil — complete characterisation of fatty acids (saturated, monoenoic, dienoic, trienoic, tetraenoic, conjugated, esterified), resin acids and neutral components across 13 fraction groups
  • Studies on Indian tall oil — dedicated chapter on the composition and characteristic properties of tall oil derived from Indian pine, including factors influencing composition (wood species, geography, chip storage)
  • Analytical methods — Gas Chromatography (GC), GC-MS, Thin-Layer Chromatography (TLC), preparative argentation TLC, methylation, silylation, Soxhlet extraction, TAPPI standard testing
  • Soap acidulation chemistry — sulfuric acid process, carbon dioxide process (economics), spent acid disposal, sulfur balance, soda losses, pilot plant results by Technical Research Centre of Finland
  • CTO distillation processes — Luwa CTO distillation process, effluent minimisation, reboiler design, tower internals, corrosion and materials of construction, Sorbex simulated moving bed process
  • Dimer acids manufacture — feedstock specifications, clay-catalysed thermal condensation, effect of reaction variables, TOFA as principal feedstock, commercial production process\
  • Azelaic and pelargonic acid production — ozonolysis process, industrial utility, feedstock considerations
  • Tall oil in alkyd resins — short oil, medium oil, long oil and rosin-modified alkyd formulations; solvent and fusion processes; distilled tall oil epoxy ester
  • Rosin sizing for paper — paste size, dry size, liquid size preparation (cooking, emulsion, Bewoid, Delthirna processes), internal and external sizing, effect of wet strength resins, sizing test methods (Cobb test, water absorption, ink penetration)
  • Tall oil in printing inks — typographic, heat-set, steam-set, newsprint, lithographic, gravure, silk-screen inks, overprint varnishes
  • Tall oil in rubber — SBR formulations (hot and cold rubber, latex types), foam rubber
  • Tall oil in adhesives — rubber based adhesives, hot-melt adhesives, linoleum cements
  • Tall oil in petroleum applications — oil well fracturing, drilling muds, demulsifiers, corrosion inhibitors, lubricating oil additives
  • Tall oil in flotation — collectors and flotation applications
  • Tall oil fatty acids as chemical intermediates — amides, nitriles, amines, quaternary ammonium compounds, polyethoxylated fatty acids, cationic flotation agents
  • Tall oil in defoamers — antifoam formulations for fermentation, papermaking, phosphoric acid production; tall oil pitch-derived defoamers
  • Tall oil in disinfectants, synthetic detergents, biodegradable detergents, wetting agents, plasticizers
  • Tall oil in coprecipitated barium salts — pigment treatment, rosinated lithols for printing inks
  • Tall oil pitch as renewable resource — asphalt and pavement applications, wear test results, field experiment data

Who This Book Is Written For

The handbook is essential reading for:

  • Chemical manufacturers and process engineers in tall oil, rosin, dimer acid or TOFA processing
  • Paint and coatings manufacturers using TOFA as an alkyd resin feedstock
  • Paper industry technologists responsible for internal sizing and coating operations
  • Adhesive, sealant, printing ink manufacturers using rosin or polyamide resins
  • Rubber compounders using rosin as an emulsifying and processing aid
  • Project consultants and investment analysts evaluating tall oil or rosin processing projects
  • Mining chemicals manufacturers using tall oil in flotation collector formulations
  • Research institutions and universities with programmes in forest products chemistry, oleo chemistry or specialty chemicals
  • Entrepreneurs evaluating tall oil derivative chemicals as a business entry point

Why This Is the Reference You Need

Technical literature on tall oil and rosin is genuinely hard to find in consolidated, accessible form. Much of what exists is fragmented across journal papers, mill-specific reports and patents. The NPCS handbook brings it all together in a structured, commercially-oriented reference, covering everything from the kraft mill soap skimmer to the final product formulation. At 480 pages and dedicated chapters on Indian tall oil, it is one the few references to address the composition and properties of tall oil derived from Indian pine specifically — a gap that matters enormously to any manufacturer or researcher working with domestically sourced raw material.

Book Details at a Glance

Book TitleHandbook on Tall Oil Rosin Production, Processing and Utilization
AuthorDr. H. Panda
PublisherAsia Pacific Business Press Inc. (NPCS)
ISBN9788178331515
Pages480
FormatPaperback
Price₹1,575 (India) | US$ 150 (International)

Get Your Copy Today

Handbook on Tall Oil Rosin Production, Processing and Utilization

If you work in specialty chemicals, paints and coatings, paper, adhesives, rubber, mining chemicals, or petroleum processing — or if you are evaluating any of these sectors as a business opportunity — this handbook gives you the technical foundation that most other available resources simply do not provide on this subject. At 480 pages with coverage ranging from kraft mill soap skimmer engineering to final product formulation chemistry, it is a reference that earns its shelf space many times over.

Dr. H. Panda’s systematic, process-oriented approach across the full tall oil value chain — production, analysis, fractional distillation, derivative chemistry, and application formulations — makes this one of the most practically useful specialty chemical handbooks NPCS has published. If tall oil, rosin, or TOFA is part of your business or your research, this is the book you should have read before you started — and it is not too late to have it on your desk now.

Price: ₹1,575 (India) | US$ 150 (International)

🌐 Buy from NIIR.org🛒 Buy on Amazon India📦 Buy on Flipkart
https://www.niir.org/books/book/handbook-on-tall-oil-rosin-production-processing-utilization/isbn-9788178331515/zb,,18b57,a,0,0,a/index.htmlhttps://www.amazon.in/dp/8178331519https://www.flipkart.com/handbook-tall-oil-rosin-production-processing-utilization-alcohol-based/p/itmdva3hahrnuezz

Your Investment Deserves the Right Opportunity

Every serious investment begins with choosing the right sector and the right  business model. With hundreds of industrial opportunities available across India’s  manufacturing and clean-energy landscape, making the most informed choice is crucial. Niir’s Startup Selector tool helps entrepreneurs, MSMEs and investors identify the most suitable business opportunities based on their investment capacity, location and interests, ensuring their capital is directed toward the venture with the best fit.

Frequently Asked Questions

What is tall oil and how is it produced? +
Tall oil is a byproduct of the kraft pulping process. When pine wood chips are cooked in the kraft process to produce cellulose pulp, the resins and fatty acids naturally present in the wood are saponified and dissolve into the black liquor. This soap fraction is skimmed off from the black liquor evaporators, and then acidified — typically with sulfuric acid — to release the crude tall oil (CTO). CTO is then processed by vacuum fractional distillation into fatty acid, rosin, and pitch fractions.
What is the difference between tall oil and rosin? +
Tall oil is the crude mixture of resin acids, fatty acids, and neutral compounds recovered from kraft pulping black liquor. Rosin specifically refers to the resin acid fraction of tall oil — a mixture of diterpene acids, predominantly abietic acid and its isomers. When tall oil is fractionally distilled, the rosin fraction is separated from the fatty acid fraction (TOFA) and the pitch. Rosin derived from tall oil is sometimes called 'tall oil rosin' or 'liquid rosin' to distinguish it from 'gum rosin' obtained by tapping pine trees.
What are tall oil fatty acids (TOFA) and what industries use them? +
TOFA is the fatty acid fraction obtained from fractional distillation of crude tall oil. It consists primarily of oleic acid (approximately 48–52%) and linoleic acid (approximately 43–48%), with very small amounts of saturated acids and rosin acids. Industries using TOFA include surface coatings (alkyd resin feedstock), adhesives (hot-melt and rubber-based), rubber (SBR polymerisation), detergents and soaps, lubricants, corrosion inhibitors, and chemical intermediates (dimer acids, azelaic acid, amines, polyamides).
What are dimer acids and how are they manufactured from tall oil? +
Dimer acids (C36 dibasic acids) are produced by the thermal dimerisation of unsaturated fatty acids — predominantly oleic and linoleic acids — catalysed by small amounts of montmorillonite clay under controlled temperature and pressure conditions. TOFA is the principal and most economical feedstock for dimer acid production. Dimer acids are further converted to polyamide resins (used in hot-melt adhesives, printing inks, and epoxy curing agents), or used directly as polymer building blocks.
How is rosin used in paper sizing? +
Rosin sizing uses the rosin fraction of tall oil (or gum rosin) as an internal sizing agent in paper manufacturing. Rosin reacts with aluminium sulphate (alum) in the paper stock to form an insoluble aluminium rosinate that deposits on cellulose fibres, imparting hydrophobicity and water resistance to the final sheet. Available forms include paste size, dry size, and various liquid size preparations (cooking, emulsion, Bewoid, Delthirna processes). The degree of sizing is measured by standard tests including the Cobb test, ink penetration test, and water immersion test.
What is the role of tall oil in alkyd resin production? +
Tall oil fatty acids are a key feedstock for alkyd resin synthesis, which involves the reaction of a polyol (glycerol or pentaerythritol), a polybasic acid (typically phthalic anhydride), and a fatty acid. The oil length of the alkyd — short, medium, or long — determines its drying speed, film properties, and application. Short-oil alkyds with TOFA are used in baking finishes; long-oil alkyds in brush-applied decorative paints. Rosin-modified alkyds are also formulated for specific ink and adhesive applications.
What are the petroleum industry applications of tall oil? +
Tall oil and its derivatives are used extensively in petroleum field applications. Tall oil fatty acid derivatives serve as corrosion inhibitors in pipelines, demulsifiers for crude oil dehydration, lubricating oil additives, and drilling mud additives. In oil and gas well fracturing operations, tall oil-based materials are used as friction reducers and corrosion control agents. These applications make tall oil an important specialty chemical input for the oil field services sector.
What is tall oil pitch and what are its commercial uses? +
Tall oil pitch is the high-boiling residue from CTO distillation, consisting primarily of neutral compounds — sterols, wax alcohols, diterpene hydrocarbons — along with some unfractionated resin and fatty acids. Commercial uses include asphalt modification (improving wear resistance and pavement durability), antifoam agent formulations (where sterol-rich fractions have defoaming activity), and as a source of phytosterols for pharmaceutical or nutraceutical applications.
How is crude tall oil acidulated — what are the main process choices? +
The traditional acidulation method uses sulfuric acid, which converts sodium tallate soaps to crude tall oil in an essentially irreversible reaction. The carbon dioxide process, developed as an alternative, uses carbonic acid formed from CO2 and water to partially replace sulfuric acid — reducing sulfate brine generation and improving sulfidity balance in the kraft mill. Pilot plant trials have demonstrated 40% reduction in sulfuric acid consumption using the CO2 process, with further cost benefits from reduced sodium hydroxide consumption.
Can tall oil be commercially produced in India? +
Yes. India has an established paper industry using pine-based kraft pulping in states like Uttarakhand, Himachal Pradesh, and parts of the Northeast. The handbook includes a dedicated chapter on studies of Indian tall oil composition, covering the properties and component distribution of tall oil derived from Indian pine species and the factors that influence its quality — including wood species, geographic location, and chip storage conditions. This makes the handbook uniquely relevant for Indian manufacturers considering tall oil recovery and processing.
What is the business entry model for tall oil processing? +
Entry models vary by scale and starting point. A kraft pulp mill that currently does not recover soap or sells CTO without further processing can add value by installing distillation capacity to produce TOFA, rosin, and pitch fractions for sale to downstream users. A specialty chemical manufacturer without upstream integration can source CTO and build a distillation and derivative processing business. A chemical entrepreneur can focus on specific derivative chemicals — dimer acids, rosin-based paper sizing agents, or alkyd resin production using TOFA — without needing to integrate back to the pulping process.
Where can the Handbook on Tall Oil Rosin Production, Processing and Utilization be purchased? +
The handbook is available from NIIR.org (the publisher's website), Amazon India, and Flipkart. Purchase links are provided in the section below. The book ships within five working days from the publisher and is priced at ₹1,575 for the Indian market and US$ 150 for international buyers.
Tags: Crude Tall OilRosin ProductionTall Oil ApplicationsTall Oil Business OpportunityTall Oil Fatty AcidsTall Oil RosinTall Oil Rosin Production
Share196Tweet123
Previous Post

Ultra Thin Copper Foil: Manufacturing Business Ideas, Market Opportunity, and Investment Guide for Indian Entrepreneurs

Diksha Garg

Diksha Garg

Diksha Garg is a marketing strategist and business growth enthusiast with over 7 years of experience driving impact through data-driven insights and strategic storytelling. She writes for entrepreneurs and startups, breaking down complex business challenges into actionable ideas that help founders scale smarter, market better, and build sustainable growth.

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Contact Us

    Categories

    • Agri Business Opportunities
    • Business Ideas
    • Chemical Industry Business Opportunities
    • Cosmetics and Personal Care Business
    • Eco Friendly Sustainable Business
    • Entrepreneurship Leadership and Startup Growth
    • FMCG Consumer Products Business
    • Food Processing Business Industry
    • Future & Emerging Industries
    • Government Schemes Policies for Business
    • Import Export Business Opportunities
    • Industrial Project Reports Business Guide
    • Investment Funding for Startups
    • Manufacturing Business Ideas for Startups
    • Market Research Trends for Business
    • MSME & Small-Scale Industries
    • Paper Pulp Industry Business
    • Pharmaceutical Industry Business
    • Plastic & Packaging Business
    • Renewable Energy Startups
    • Startup Business Opportunities
    • Startup Business Planning and Strategy
    • Technology & Automation Business
    • Textile Industry Business
    • Uncategorized
    • Waste Management & Recycling Business
    • Water & Environmental Business
    Entrepreneur India Blog

    Copyright © 2026 Entrepreneur India

    Navigate Site

    • About
    • Advertise
    • Privacy & Policy
    • Contact

    Follow Us

    Welcome Back!

    Login to your account below

    Forgotten Password?

    Retrieve your password

    Please enter your username or email address to reset your password.

    Log In
    No Result
    View All Result
    • Home

    Copyright © 2026 Entrepreneur India

    Not enough quota to unlock this post
    Unlock left : 0
    Are you sure want to cancel subscription?