... oblong hole, square hole, triangle hole, diamond hole, The designs of hole: round hole, oval hole, oblong hole, square hole, ... cutting, turn, lapping sticking the bid, package, uncoil, getting rid of thorn, molding, annealing, lacquering, electroplating, welding, furbishing, breaking ... and tidy to produce the best effect. Adopted the most advanced treating means, the equipment can be precautions ...