Evonik in Thailand

In Thailand, Evonik has been active for more than thirty years. Today, Evonik manages a sales office in Bangkok, two production sites in Rayong and Ratchaburi.

Having been actively involved in Thailand in several different industries for more than 30 years, Evonik opened the first office in 1989. Today there is a sales office in Bangkok, one production site in Rayong producing high quality precipitated silica and Aluminium Silicates (SIPERNAT® and Ultrasil®) as well as a production plant in Ratchaburi manufacturing isomalt(Risumalt®), a sugar-free substitution product that is naturally sourced from sucrose and has half the calories of sugar.

To strengthen our operations in Thailand, in 2014 we have expanded our silica production site for precipitated silica in Map Ta Phut, Rayong, a joint venture between Evonik Industries and Oriental Siam Company. Our main focus is to better serve the automotive industry, food and animal feed industry, as well as the paints and coatings industry. This expansion, using Evonik’s latest technology, comprised enhancements of the production process to ensure highest levels of safety, productivity, and quality of the overall production.

As one of the leading manufacturers of silica, the precipitated silica (Sipernat® and Ultrasil®) Evonik produces can be used in tires with low rolling resistance as well as in the paints and coatings industry, as flow additives and carriers in food, cosmetics and drug production, or in manufacturing silicon applications, among others.

In March 2017, Evonik together with Thai company Rajburi Sugar, opened a joint venture in Ratchaburi to manufacture isomalt for the Asian market . Under the brand name of Risumalt®, isomalt is a sugar-free substitution product that is naturally sourced from sucrose and has half the calories of sugar.


Evonik (Thailand) Ltd

Evonik’s head, sales & business development office in Thailand.


Evonik (Thailand) Ltd 36th Fl, Exchange Tower Unit 3603-4 388 Sukhumvit Rd., Klongtoey
Bangkok 10110 , Thailand
+66 2784 7900

Evonik United Silica (Siam) Ltd

Operated since 1990, this plant in Map Ta Phut was expanded in the first quarter of 2014 to better serve the needs of customers.
Products: Precipitated Silicas and Aluminium Silicates


Evonik United Silica (Siam) Ltd 1, I-3 Road, Map Ta Phut Industrial Estate
Rayong 21150 , Thailand
+66 3868 3946

RSC Evonik Sweeteners Co Ltd

As a joint venture between Evonik and Thai company Rajburi Sugar, it is company's first Asian production plant for sugar substitute isomalt
Product: isomalt


RSC Evonik Sweeteners Co Ltd 302 S&A Building, 2nd Floor, Silom Road, Bang Rak
Bangkok 10500 , Thailand
+66 2 0307910