Thai Engineering Specialists Co., Ltd. (Tesco) is the manufacturer of AirMax brand air filters. Established in 1988, we specialize in providing air filtration solutions for industrial plants, cleanrooms, and HVAC systems.

With over 37 years of expertise, we produce HEPA/ULPA, Pre, Medium, and Fine Filters. All our products are manufactured in compliance with ASHRAE / EN standards, and we provide professional DOP/PAO quality testing services.