About Us

Cathay-Siam International (CSIC) Co., Ltd is a leading specialist in air and liquid filtration, particularly in dust emission control and wastewater treatment applications.

All of our products aim to ​be environmental-friendly, to reduce electrical and water consumption, and to be cost-efficient. With more than 20 years of experience, CSIC strives for maximum customer satisfaction through premium services and expertise. 

We offer our products and services in the following applications:

- Dust collecting system

- Air filtration

- Wastewater treatment

- Liquid filtration

- Cooling tower cleaning agent

- Super Trap zero air loss condensate drain