We want to buy all Steel, Stainless Steel Fastener, Standed and Non Standand Fastener, Screw, Washer Fasteners.
我们要采购所有的钢，被站的不锈钢紧固件，紧固件，螺丝钉，垫圈紧固件。
2
The other kinds of sprcial & unusal Spring washer, Spring washer made of special steel, stainless steel, copprer.
其他各种特殊、异型及特种钢、不锈钢、铜质的弹簧垫圈。
3
The result shows the reason why sealing washer parts destroyed is that carbon content of ST12 steel used is too low. High carbon content and strength material should be used to produce the parts.