Shanghai Well- Sun precision Tools Co. , Ltd is one of the professional corporations of producing PCB drills in China Mainland. The drills size is from 3. 20mm to 6. 50mm and annual output of dills achieves 2 millions bits. We adopt CNC fluting grinder and plunge grinder as main producing equipment. The engineers have rich experience in PCB tools R & D, Based on quality and innovation as the start point and the final objective, We manufacture high quality products at reasonable cost by strictly process steps. The corporation gets the certification of ISO9001: 2000 In addition to Chinese Mainland, Our products are still exported to America, Germany, Korea, Singapore, Thailand and Taiwan, Hong Kong, Etc. Our company also produce φ3. 20mm- - Φ6. 50mm PCB drills with chip breaker & thinning and φ2. 05mm- - Φ4. 10mm web thinning high speed PCB drills with Dia. 2. 0mm shank drills. We design and produce the non- Standard tool and provide ring setting and marking for PCB drills from 3. 20mm to 6. 50mm. Our company is the special dealer with Sweden Sandvik Hard Materials. This group is the largest solid carbide tungsten manufacturer in the global. They produce all kinds of solid carbide tungsten products that are need for modern industry. Our Service goal is providing quality products at the reasonable price with timely delivery, Welcome all customers to deal business with us.