Ningbo Dongtuo Metal Products Co Ltd is establised in 2003, which is a fastener factory located in Ningbo city of China. Our products mainly cover below items; 1. Carbon & Stainless steel Bolt / Nut / Washer / Thread Rod / Anchor Bolt / U-Bolt (size: 6mm-64mm 1/4"-3"), Grade 4.8-10.9, Grade 5, Grade 8, SUS304(A2), SUS316(A4) 2. ASTM A193/A320 Grade B7/B7M/L7/L7M/B8/B8M/B16 Heavy Hex Bolt/Thread Rod/Stud Bolt 3. ASTM A194 Grade 4/7/8/8M/2H/2HM Heavy Hex Nut 4. ASTM A325/A490/A563/F436 Steel Structural Fastener Kits 5. ASTM A574 Socket Cap Screw 6. OEM Cold-forming Metal Parts in according to customer&＃039;s requirements. It&＃039;s very appreciated if we can become your long-term offshore fastener sourcing tunnel from China.