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1. Grade: SUS201,SUS304,SUS316,A2-70,A2-80,A4-80,4.8 6.8 8.8 10.9 12.9 2. Standard: DIN 3. Certification: ISO9001, SGS, CTI, ROHS Our range of product: BOLTS: hex bolts, heavy hex bolts, hex flange ...