Beijing Yisiyan Technology Research Center
Telephone010-56645598 13366904824
Websitehttp://www.bjkaida.cn
CEG Chemical Science&Technology Co., Ltd.
TelephoneMobile:13665161512
Websitehttp://www.cegchemical.com
Shanghai Haohong Pharmaceutical Co., Ltd.
Telephone4008210725 4008210725
Websitehttps://www.leyan.com/
Yantai Shengkailun Chemical Technology Co., Ltd.
Telephone 13356901049
Websitehttps://www.sklnchem.cn
Aromsyn Co., Ltd.
Telephone+86-0571-85585865 +8613336024896
Websitehttps://www.aromsyn.com/