堕落的圣骑士在线观看完整版未删减|尖峰时刻1完整版电影在线观看|日韩中文字幕成人免费视频|日韩中文字幕组,性xxxhd,先锋影音欧美,91日本在线播放

Main Products
Products Grade: SWRCH10K,SWRCH15K
Specifications: Φ5.5~Φ28mm
Applied Standard:  Q/XG114
Characteristics: The product is used to produce screw.
Applications: Common partsCommon fastenerconstruction fastener steel
Use of Products: SWRCH10K,SWRCH15K is used to produce screw. 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.