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 goods can meet various needs of every consumer. Our main products are Cleanroom chairs, ESD chairs, Lab 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. Our products passed the most stringent industrial tests (SGS, BIFMA X5.1) and are assured of delivery to consumers. "LEADAN" chairs have been exported to Europe, America, Australia and Southeast Asia. In the future, "LEADAN" will place cost-effective chairs to the factories and professional venues, so that people can sit with the perfect quality chairs to enjoy their work. And we'll adhering to the strict management, innovative thinking, quality service attitude for you, to establish efficient, healthy, and correct layout of your workplace.