Luoyang Sigma Instrument Manufacture Co., Ltd.
Luoyang Sigma Instrument Manufacture Co., Ltd. is located in Luoyang City. Our company has sixteen nationally patented inventions and many intellectual property rights. All the patented technologies have been industrialized and applied to the technical progress of enterprises, making good social benefits. Our products have been sold to Tsinghua University, Beijing Science University, Harbin Industry University, Shenyang Chemistry Industry University, Fudan University, Tongji University, Xi'an Traffic University, Zhejiang University, Zhengzhou University, Chinese Science College, Shanghai Silicate Study, Chongqing University, South Korea, Vietnam and Malaysia. Our "Sigma" trademark has been registered in CTMC. The brand effect of Sigma has been developed rapidly and upgraded constantly in the field.