Beijing Yanhua Jilian Opto-Electronic Technology Co., Ltd.
Telephone(+86)13146479469
Websitehttp://www.yunjiopto.com/
Hubei wei shi reagent group ltd., company
Telephone027-59105166 13125137732
Websitehttps://www.4008081911.com
Wuhan WinYuanBei Trading Company
Telephone86-13349903920; 13349903920
Websitehttp://www.yyb-chem.com
Hubei wei shi reagent group ltd., company
Telephone027-59102966 18717199209
Websitehttps://www.4008081911.com
Shanghai Daken Advanced Materials Co.,Ltd
Telephone+86-371-66670886
Websitehttps://www.dakenchem.com/