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  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.