Dayang Chem (Hangzhou) Co.,Ltd.
Telephone+86-0571-88938639 17705817739
Websitehttps://www.dycnchem.com/
Guangdong wengjiang Chemical Reagent Co., Ltd.
Telephone0751-2815987 13927875076
Websitehttp://www.wj-chem.com
LGC Science (Shanghai) Ltd.
Telephone 17717235263
Websitehttps://www.lgcstandards.com/CN/en/Pharmaceutical/cat/279492
Wuhan Silworld Chemical Co.,Ltd
Telephone+86-027-85613400 +86-15827173649
Websitehttp://www.silworldchemical.com/index.asp
GIHI CHEMICALS CO.,LIMITED
Telephone+86-571-86217390; +8618058761490
Websitehttps://www.gihichem.com/