... 2.Surface treatment: zinc plated, Cr3+C Type 17 Chipboard Screw Product Feature:1. Standard: GB, DIN,ANSI, BS, JIS2. Material ... , torx, square and so onAdvantage:1. Good hardness2. High and low temperature resistant3. Multicolor choose4. Competitive Price5. Superior Quality, TUV CERT ... need: America, Europe, Asia, and so on. Type 17 Chipboard Screw