亚洲首页av,久久中文字幕免费视频,国产高清不卡av,日日夜夜亚洲,www.这里只有精品,精品亚洲国产成人av制服丝袜,中文字幕av线

　　Hengshui Tongda Brake Material Co.,Ltd. was established in the mid-1990s, scientific research, development, production in a body, a automobile disc brakes and drum brakes professional manufacturers, the annual production capacity 2,000,000 sets, simultaneously concurrently management steel back, Hoof iron, annex.

　　This company and the domestic and foreign scientific research institution have established the long-term scientific research cooperation relations, has the strong development ability, the technical level achieves the domestic advanced level, the performance conforms to GB 5763-98 with the United States SAE standard. The development of new asbestos-free environment brakes with brake performance and stability, wear resistance, and no noise, no pollution, and other advantages.