Customer Services Hotline
Hong Kong: +852 2693 1772
Dongguan: +86 (0) 769 3901 5285
Contact Person: Joyce Wu e-mail: dg_sal@nhh.com.hk / dg.marketing@nhh.com.hk
Dongguan (Coltec): +86 (0) 769 8122 6812
e-mail: dgct.marketing@nhh.com.hk
Dongguan (Chengdu): +86 (0) 28 8328 5026
e-mail: dgct.marketing@nhh.com.hk
Shanghai (Coltec): +86 (0) 21 6921 3333
e-mail: info@nhh.com.hk
Qingdao: +86 (0) 532 8727 3101
e-mail: info@nhh.com.hk
Xiamen: +86 (0) 592 609 3211
e-mail: info@nhh.com.hk
Service Hours:
Hong Kong: 9:00am - 6:00pm (Monday to Friday)
China: 8:30am - 5:30pm