About Us

SIGMAFORCE has specialized in the design, production & Sales of Industrial chairs and other professional chairs since 2007.

The brand "LEADAN" is famous and well-known among our customers.By now, we have developed & designed hundreds of different types of chairs to fit the different needs of industrial, medical, laboratory and other industry series. 

Our main products are Cleanroom chairs, ESD chairs, Lab chairs, Gaming chairs,high structure chairs, and other kinds of industrial chairs.

Each "LEADAN" chair is in accordance with ergonomic design, highlighting the features of beautiful, practical, durable, safe and comfortable.