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/
Blocksynth Pharmaceutical Technology Co.,Ltd
Telephone0086-19817745290; +8619817745290
Websitehttp://www.blocksynth.com/
Yantai Shengkailun Chemical Technology Co., Ltd.
Telephone 15552437730
Website
Ningbo Zhenyue Pharmaceutical Technology Co., Ltd
Telephone 19817745290
Websitehttp://www.blocksynth.com/cn/