1979

E.S.T. TRADINGCO., LTD. was founded in Bangkok, Thailand to offer indoor air quality (IAQ) products and wide range of HVAC equipments.

1998

Entered clean room contracting business

2001

Started licensed production of “Micro Air” electrostatic precipitator air cleaners technology from Metal-Fab Inc. (USA) to further expand our commercial line.

2002

Developed particulate and odor control products under the brand “HIEND” with our accumulated experience and knowledge.

2005

Started providing air purifier rental, installation and maintenance services with warranty options for private and public sectors across Thailand and abroad.

2021

Introduced “CURA” air purifier with germicical technology for healthcare and commercial markets

TODAY

We continue to collaborate with experts around the world to improve performance,
Reliability and durability of our products to better serve our customers.