kaiyu DTH drill bit 1.We are factory 2.material:high manganese steel,carbide 3Longer service life &competitive price ISO9001 kaiyu DTH drill bitWe have rich experience in drill bit field so the quality is absolutely OK. All of the producing processes are finished in our...

taper button bit 1. Manufacturer of varies button bit 2. Retrac button bit, tapered button bit etc 3. High efficiency, long Specialisted in producing of varies type of button bits in different size in China for many years. Including of tapered button bit, retract button bit,...

Kaiyu cross drill bit 1)good price,high quality 2)export many countries 3)ISO9001 Certificate 4)professional manufacturer 1)70mm cross drill bit,7 degree bits, reasonable price 2)Our tight focus and continuous development work secure the latest technical...

1)good price,high quality 2)export many countries 3)ISO9001 Certificate 4)professional manufacturer  1)44mm cross drill bit,7 degree bits, reasonable price 2)Our tight focus and continuous development work secure the latest technical solutions for the most...

Kaiyu cross drill bit 1)good price,high quality 2)export many countries 3)ISO9001 Certificate 4)professional manufacturer 1)70mm cross drill bit,7 degree bits, reasonable price 2)Our tight focus and continuous development work secure the latest technical...

Kaiyu cross drill bit 1)good price,high quality 2)export many countries 3)ISO9001 Certificate 4)professional manufacturer 1)70mm cross drill bit,7 degree bits, reasonable price 2)Our tight focus and continuous development work secure the latest technical...