Hebei Yongguang Mining Equipment Co., Ltd: Our company mainly has heavy drilling tool, mining ground tools, DTH drilling with three kinds of products. Mainly include: coal drill bit, coal rock drill bit, rock drill bit, wind drill, double JI type bit series, small diameter bolt drill series, water drill bit, PDC bit of diamond composite piece, low wind pressure DTH hole, high wind pressure DTH hole, piling machine drilling tool, planer tooth, grader's cutter head, shearer pick-shaped cut.