Volvo Service Hotline: 400-052-5168
SDLG Excavator Hotline: 400-065-6669
SDLG Loader Hotline: 400-000-6840
Henan Wotong Service Hotline: 0371-67272999
Complaint Hotline: 0371-67391171
Henan Tonguan Service Hotline: 0371-65646840
Complaint Hotline: 0371-65646840
Zhengzhou Hanbang Service Hotline: 0371-65646363
Complaint Hotline: 13592669173
Xian Tonguan Service Hotline: 029-84360588
Complaint Hotline: 13636811229
Lanzhou Tonguan Hotline: 0931-7328222
Complaint Hotline: 18993100006
Henan Tonguan Heavy Industry Co. LTD. 13323860322
Complaint Hotline: 0371-55691303