久久中文字幕久久无码,亚洲日韩va一区二区三区,99re6在线观看国产精品,成人国产精品秘 果冻传媒在线

  • <video id="boa4d"><mark id="boa4d"><noframes id="boa4d"></noframes></mark></video>
  • <b id="boa4d"><acronym id="boa4d"></acronym></b>
    <var id="boa4d"><track id="boa4d"><ins id="boa4d"></ins></track></var>

    <video id="boa4d"><mark id="boa4d"></mark></video>
    <u id="boa4d"></u>

    1. Casus Products>> Casus

      QSCM435-C of Xingtai Steel,used to produce high strength bolts of grade 12.9, the product is used for the engine bolt. Our customer Honda, Dongfeng No.2 Car VolkswagenFactory reflect the product surface quality is good, the decarburization layer depth is small, uniform hardness, can completely satisfy the application in the field of high strength bolts in the car.

      1. Engine Bolts 2.engine