Pre-sales technical support

Mr. Lu：+86-010-82393237

Mr. Xu：+86 13716698929

E-Mail：xuzilin@granpect.com

Fax telephone : 016-82393299

 
After-sales service support
Mr. Li：+8618682945003
E-Mail：liyuli@granpect.com
Fax telephone：+86-010-82393299