Founded in 1971, Ningbo Tiangong Great Star Tools Co.,Ltd. is China HSS Drills Manufacturers and SDS Drill Bits Factory.As An important production base for the production of hand tools, the company covers 30 thousand square meters, building area covers 23 thousand square meters. Tiangong has more than 280 employees and sales amount was 20 million USD in last year. Its main products include hand tools, wood chisel, wood plane, flat wood bit,cold chisel,SDS&masonry drill bit, file&rasp etc. Company passed ISO9001 and BSCI quality management system, and GS, TUV, FSC product quality certification. Our Wholesale HSS Drills Bits are exported to over 30 countries such as USA,Germany,Japan,Spain,Italy,UK,Korea,Australia,Canada and etc.