中文字幕精品一区二区精品,乱码av午夜噜噜噜噜一,日韩精品久久久久久久电影竹菊,欧美一区二区三区在线播放,日韩av中文字幕在线,久久r久久,亚洲男人天堂2024

Casus Products>> Casus

  The QSWRCH18A produced by XINGTAI STEEL has the advantages of stable composition, low harmful elements, high purity of steel and less surface defects. The product is mainly used in the production of auto parts. A customers of XINGTAI STEEL uses this product to produce self tapping screws for automotive interior, and feedback that the product has good cold heading forming and low cracking rate, which meets the use requirements of product.