免费无码国产免费172,日韩美女啪啪不卡视频,免费顶级欧美熟妇高潮xxxxx,竹菊影视一区二区在线

Main Products
Products Grade: 316
Specifications: φ5.5~28mm
Applied Standard:  agreement
Characteristics: screw,fasteners,medical wire
Applications: Stainless steel wireStainless steel fasteners
Use of Products: 316 has good corrosion resistance,high temperature strength and good work hardening performance. It usually used for high corrosion resistance screw、fasteners、medical wire.