DongLong Tools was founded in 1992. We mainly provide products and services to gear manufacutring field as well as gear inspection field, including aerospace, auto manufacturing, sewing machine manufacturing, machinery manufacturing industry, etc. By all our employees hard working during the past 20 years, DongLong tools company has become a modern enterprise integrating R&D and sales of fixtures, measuring tools as well as inspect tools. DongLong Tools Company owns sophisticated production equipment, has a number of advanced modern production lines and high-precision inspection and testing methods of measurement, all of these guarantee our products of top quality. The company has passed ISO9001:...