Fabricant et fournisseur de Équipement de forage et pièces de rechange de la Chine, offrant 216mm IADC437 Water Well Drill Bit API 7-1 Three-Cone Bits for Well Drilling, 444.5mm IADC517 Rock Core Drill Bit Ore Mining TCI Bit for Well Drilling, 444.5mm IADC537 Core Drilling Bucket Roller Bits Tri-Cone Bit for Well Drilling de qualité etc.