Shaanxi Aviation Hong Feng Precision Mechanical Tool Corporatio is affiliated to China Aviation Industry Corporation. China Aviation Industry Corporation was rated as an advanced enterprise by Ministry of Aviation Industry in 1987. The same year China Aviation Industry Corporation was promoted to National Secondary Enterprise. The products have achieved a number of patents. A perfect quality management system has been established, passing ISO9001:2000 quality certification.Over the years we take use of state-of-the-art aviation technology, excellent processing equipment, advanced detection means and a perfect service system.Main products: thread gauge, smooth gauge, internal thread cutting tool, external thread cutting tool, heavy caliper, height gauge & ball screw. Varieties: threaded plug and ring gauge, oil pipe thread gauge, machine tap, full polished tap, thread roller, round die, heavy duty vernier caliper, heavy duty dial caliper, cursor height gauge, precision ball screw, etc.Our products are sold in more than thirty countries and regions such as Europe, America, Asia, Africa and Oceania, enjoying high reputations at home and abroad.We have invested heavily in order to continuously improve product quality and enhance our core competitiveness, technological innovation. We have introduced world-class threaded processing and testing equipment.Shaanxi Aviation Hong Feng Precision Mechanical Tool Corporatio is a willing to cooperate with domestic and foreign enterprises and individuals. With the spirit of "Continuous Improvement", we will provide customers with quality services.