TEL：+86 15932726108(Whatsapp) QQ:475768273
OFFICE：No.15 ,No.319-324, F1, Shoulashou Int'l. Autoparts Center,Shijing Road,Hejian City, Hebei Province, China
FACTORY：Junziguan,Shijingcun Town, Hejian City , Hebei Province , China
Feedback of HDD hole opener
Here is the video of recording 330mm HDD hole opener, from new to 260 meters rock drilling, to 550m, 750m, 1000m, 1600m. Customer is very satisfied.