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