We have our own factory. Ningbo Si Tuo Trading Co., Ltd. is a manufacturer specializing in the production and development of hardware accessories and fasteners, such as hollow wall anchor, steel band(metal band/perforated banding ), express nail anchor, ceiling anchor, insulation nails, manganese steel, insert stamping parts, U-shaped cable clamps and other products professional production and processing company, and our company has advanced production technology and perfect control equipment, as well as a complete and scientific quality management system. The products have passed CCC certification, CQC certification, and test report standard certification. Some export products have passed CE certification and RoHS certification, and many of them have obtained national invention patents. The integrity, strength and product quality of Ningbo Si Tuo Trading Co., Ltd. Have been recognized by the industry. Welcome friends from all walks of life to visit, guide and negotiate busines