Customer Services Hotline:

Hong Kong: (852) 2693-1772

Dongguan: (86-769) 8558-8755 (Ext. 681)

Contact Person: Chen Xiao Min   dg_sal@nhh.com.hk / dg.marketing@nhh.com.hk

Dongguan (Coltec): (86-769) 8122-6812

                           dgct.marketing@nhh.com.hk

Shanghai (Coltec): (86-21) 6921-3333

            info@nhh.com.hk

Qingdao: (86-532) 8727-3100

               info@nhh.com.hk

Xiamen: (0592) 609-3211

            info@nhh.com.hk

Service Hours:

9:00am - 6:00pm (Monday to Friday)