麻豆Av一区二区,精品国产精品自在线99,400部国产精品偷自产在线,久久精品国产只有精品免费

The brake load limiting coupling for three in one reducer recently developed by our company has obtained the national utility model patent certificate. The patent product integrates brake, coupling and load limiting protection. Its successful development will mark that the development of domestic "three in one" reducer coupling has reached the international leading level!