Have you ever seen the screws with the thickness of washbasin and the height of four floors? A new high-speed railway in Ningxia is fixed on this screw. On January 7, science and technology daily came to the construction site of yinwu passenger dedicated
How to unload rusty fasteners skillfully? I'm afraid that many of my friends have encountered such problems in their daily life. Today, our editor of No.1 Industrial Products Co., Ltd. will introduce some knowledge about this.