Wuxi Sigma Chemical Product Co., Ltd. (the original Wuxi Sigma Chemical Technology Co., Ltd.) was established in 2008, covering an area of 120,000 square meters. Our company is a high-tech enterprise which integrates scientific research, production and trade. Currently, our factory has excellent equipment, strong technical force, advanced production technology and perfect testing methods. Our products have won a good reputation in chemical-related fields at home and abroad. Currently, our ...