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Ruian Yongjiu Standard Component Factory
瑞安市场桥永久标准件厂
Premium Supplier
10 Years
Main Products
Phosphorus copper / stainless steel
spring steel / carbon steel
spring gaskets
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(DIN 1440 - 1974)
material
Carbon steel
Coating
black oxide coating
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Similar Products
GB /T 97.3 - 2000
ISO 8738 - 1986
JB /ZQ 4336 - 2006
