97超碰人人澡人人,久久久一区二区,亚洲天堂色图片,7777精品伊人久久久大香使用方法,国产午夜一区,日韩av中文字幕一区二区,国产黄色大片儿

Main Products
Products Grade: C10C、C8C
Specifications: Φ6.5-40 mm
Applied Standard:  Q/XG123
Characteristics: The product is used to produce vehicle parts of German car and cold -forming parts.
Applications: Common parts
Use of Products: The product is used to produce vehicle parts of German car .It is also can be used to produce fastener of grade 4.8 to 6.8 and non-standard parts. The product has characteristics of uniform-chemical composition, low percentage of harmful elements, high purity, good surface quality, high accuracy of geometric dimensions, low rate of cracking.