Hangzhou Kefik Chemical Co., Ltd

Beijing Kelin Baide Environmental Protection Co., Ltd. is a high-tech enterprise certified by the Beijing Municipal Science and Technology Commission. Coke remover, boiler coke remover, liquid coke remover, liquid boiler coke remover, ash cleaning ag

Jiangsu Haixiang Chemical Co., Ltd. is located in the economically developed, conveniently accessible, and beautiful environment of the Yangtze River Delta region, and is a high-tech enterprise in Jiangsu Province. Mainly engaged in refined products

Founded in 1969 Omega Optical has built its technical reputation on defining the state-of-the-art for optical interference filter performance, designing and manufacturing a wide variety of custom and stock filters for scientists and industry worldwid