成人无码视频,可以在线观看大黄片视频,国产不良视频在线观看,日日夜夜婷婷免费视频

Our company is engaged in producing self-drilling screws for steel-structure buildings,our company's throughput is 6000 ton per year.our equipments are all from Taiwan, the quality is good and reach the international standard,we we'dlike to have a long-term cooperation with your company.

DRILLING SCREWS ,Tapping screws，Bolts、Nuts、Washers、Threaded rod、Professional non-standard bolts、non-standard screws、non-standard nuts etc... different kinds of non-standard production. The material is carbon steel and stainless steel