... Steel etc. fast response, good service, high quality non-standard factory. Xiamen Libiao Hardware Co., Ltd. is a professional ... 7 in house QE, 4 senior R&D engineer.Quality standard: ISO 9001:2000Established in 1998,-------Product profile:Screws sort: ... SCREWS, CHIPBOARD SCREWS, DRYWALL SCREWS. (with all standard available: ISO, ANSI, DIN, JIS, GB... etc)Material: Carbon steel, Aluminum, Brass, ...