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For many years,Tianjin Dongfanglong company develops it's production Through continuous bringforth new ideas and by means of advanced aviation technology and excellent equipment as wellas good measurement and ferfect service. The main production is:Thread gauge,slide plaingauge,interior thread cutting tool. exterior thread cutting tool. Heavy duty caliper, HeightGauge and ball screw ect seven seriers of production. Further classifying that is:Thread ringgauge,Thread plug gauge, oil pipe thread gauge,Machine taps.Thread roling cylindricaldie,Round dies,Heavy duty vernier caliper, Long range dial caliper. Vernier height gauge.Digit height gauge. Digital heigh gauge. Precision ball screw ect more hundreds variety.Ourproduction has been well sold in Europe, Asia, and Australia ect more than thirty contrys andhad a good fame home and abroad. In order to improve the quality of our production and the core competion of our enterprise.Our company has invested tremendous fund in technology reform and improve the techniqueartifice of cool and thermal machining .Introduced international first grade thread machiningcenter and measuring equipment. At the same time produced new production Oil gauge andgot the API certification spec 5B and spec 7. Our company are grateful to cooperate with the company and people domestic and abroad.Accoding to the principle "meet The need for consumer, improving continuely"We have beengood service for users
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