J & K SCIENTIFIC LTD.
Telephone010-82848833 400-666-7788
Websitehttp://www.jkchemical.com
Meryer (Shanghai) Chemical Technology Co., Ltd.
Telephone021-61259108 18621169109
Websitehttps://www.meryer.com/cn/index/
Shanghai Longsheng chemical Co.,Ltd.
Telephone021-58099652-8005 13585536065
Websitehttp://www.shlschem.com
CHG Opto-Electronic Corporation Limited
Telephone 2537653158 16621191650
Websitehttps://www.uncinfo.cn
Shaanxi Dideu Medichem Co. Ltd
Telephone029-61856358 15229202216
Websitehttps://www.dideu.com/