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Beiyuan,Beijing,Beijing,China China
Persona de contacto Mr. Hao gavin
Dirección Beiyuan, Beijing, Beijing
Standard: GB/T5780-5786, ISO4014, 4017, 8676, 8765, DIN931, 933, 960, 961, ASMEB18.2.1, JISB1180, AS1110 Grade: 4.8, 8.8, 10.9, 12.9
Product Description Standard: DIN934, GB/T6170-6176, ISO4032-4036, 8673-8675, ASMEB18.2.2, JISB1181, AS1112, ASTMA194/194M Grade:
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