thread countersunk head self tapping screw for concrete screw 

Tianjin HuaZhen Fasten Co.,Ltd.was found in 2003 as aprivate enterprise specializing in the manufacture and trade of assorted nailsand screws.

 As a professionalmanufacturer, our clientele can rest assured they are receiving the highestquality merchandise and the best possible service.For more information of ourproducts, please feel free to contract us to day.