According to the national industry reform GB 12676- 1999, the automatic brake clearance adjusting arm must be used compulsorily from June 65438+1 October 2003. Considering a series of problems existing in the application of automatic brake clearance adjusting arm in China at present, the mandatory implementation time of this regulation was postponed to 2000 after research by the National Development and Reform Commission.
At present, the largest manufacturer specializing in the production of automatic adjusting arm in the world is Haldex of Sweden, with a global market share of 50%. After more than 20 years of development, use and improvement, the product is very mature. The automatic adjusting arm used by Dongfeng Axle Co., Ltd. in China was developed by partially improving the products of Haldex Company in Sweden.