Yoang Ming Industrial Co., Ltd established in 1980.We've been manufacturing all kinds of screws for over 28 years, and keeping improving technique and quality.We've been certified to ISO 9001:2015.Our products ranges are Self Drilling Screw, Tapping Screw, Bi-Metal Screw, Concrete Screw, Long Size Screw, and Special Design Screw.Materials are available in Carbon Steel, Stainless Steel, and Brass material.We do our best to offer good service, high quality products, and competitive price to meet customers’ requirements.