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Linaria Chemicals (Thailand) Ltd was established more than 31 years ago and is one of the largest bulk pharmaceutical manufacturers not only in Thailand but in the entire ASEAN region. Linaria is under the umbrella of the GP group, which is one of the largest conglomerates in Thailand for over 150 years. The main philosophy behind starting manufacturing in Thailand was to harness the potential market which existed in this region and was dominated by European and American multinationals. With its geographical vicinity to the customers in the ASEAN region coupled with appropriate technology and a skilled workforce, today Linaria is the Global Leader in production and sale of Classical Macrolides and Anti-Tuberculosis APIs. -


Linaria is one of Southeast Asia’s largest manufacturers of macrolide antibiotics and anti-tuberculosis active pharmaceutical ingredients. It supplies to generic pharmaceutical companies in more than 30 countries. Currently, Linaria is the only company in the world which manufactures and markets both pyrazinamide and ethambutol active pharmaceutical ingredients used in the first line treatment of tuberculosis.

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LINARIA is an export oriented
organization exporting 80%
of its production.

To more than 30 countries across the world.

Below is a list of various key markets.

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GP Group is a Thailand-based strategic investment group which owns a number of public- and privately-owned companies across diverse sectors, such as resources, logistics, pharmaceuticals, aviation and technology. GP Group is driven by a desire to create opportunity by exploring new frontiers and funding new futures. Our purpose is founded on three core values: curiosity, foresight and humility. 

We empower businesses with our entrepreneurial mindset, deep insights, financing and extensive network of people and skills

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