We are the manufactory of the fastener，located in Haiyan，China.The factory location is very close to Shanghai and Ningbo ports. Our product line include drywall screws, hex washer self-drilling screw, Roofing screws, self-tapping screws, chipboard screws and different kind of screws. We do these products over 10 years . It is our pleasure to find a way to cooperate with you ！ I’m sure that you‘re looking for some high quality and competitive products. Here attached some photos for our showroom and some current hot-selling items. Any further questions ，please do not hesitate to inform me ！I will reply you ASAP. If you wanna more information please click http://www.hzouli.cn/