Since 2004, SINOAN was founded in Cixi City, Ningbo, Zhejiang, China, Our factory–Delrong Fasteners , it is one of drilling screw manufacture.
Which with 10000Sqr Factory, have 600 tons per month screws was produced in our factory.2017,SINOAN had because a buliding construction Suppiler , it can suitable customer purchae construction Building material and fasteners together.to suitable the market, we improve the screw quality.2019, we got ETA certification. we had got CE14592 CE14566 . ETA20-0098 for Wooden construction screw series. ISO9001:2000 Certification for our factory.
