亚洲激情精品,欧美一级淫片免费视频黄,国产视频一,国产天堂素人系列在线视频,欧美一区黄,色五月视频,亚洲一在线

Casus Products>> Casus

  The QML20Cr produced by XINGTAI STEEL has characteristics of stable chemical composition, low percentage of harmful elements, high purity, slight decarburisation, good surface quality. After spheroidize annealing, this product has characteristics of good cold heading properties ,stable heat-treatment properties and good hardenability. A customer of XINGTAI STEEL used this material to make seat gear and fed back that the product quality was stable and met the product demand.