... : 400MT/ monthWe can supply all the accessories including anchor bits, coupling, spherical nuts, plates, and stopper. Construction StagesDrilling Placement of steel ... reinforcing elements Grout placement Based in China, Maxdrill Rock Tools Co Ltd is an ISO 9001:2008-certified manufacturer of high ... waiting for you upon your demand. MAXDRILLRock Bolt, anchor bits,coupling, spherical nuts,plates, stopper