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1. First remove the sludge on the surface of broken screw head, then use the central brass to kill the center of the section, and then install a 6-8mm diameter …
In recent years, the quality of practitioners in the hardware industry has been generally improved. Take the person in charge of China Hardware City, the larges…
"You are like a fire in the winter, the flames illuminate me." In this cold winter, steel prices, especially the price of threaded steel, ignite a fir…
