customize non-standard nuts, with Al,Cu,Fe,Stainless Steel etc. fast response, good service, high quality non-standard factory. Xiamen ... in house QE, 4 senior R&D engineer.Quality standard: ISO 9001:2000Established in 1998,-------Product profile:Screws sort: ... WOOD SCREWS, SELF TAPPING SCREWS, CHIPBOARD SCREWS, DRYWALL SCREWS. (with all standard available: ISO, ANSI, DIN, JIS, GB... etc)Material: ...