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DIN 933 Full Thread Hex Galvanized Bolt Carbon Steel Hexagon Bolt 4.8/8.8 Class Bolt, Find Details and Price about Hex Bolt Class Bolt from DIN 933 Full Thread Hex Galvanized Bolt Carbon Steel Hexagon Bolt 4.8/8.8 Class Bolt - Tianjin Xinruifeng Fastener Manufacturing Co., Ltd