Tel 571-88938639 +8617705817739
Email info@dycnchem.com
Tel +8618058761490
Email info@gihichemicals.com
Tel 010-60400361
Email info@bellenchem.com
Tel +86 13590492756
Email michael.he@sensechemicals.com
Tel 010-60400362 17367276958;
Email service@bellenchem.com