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Bronze was the earliest used in China, dating back 4500-4000 years. China has already begun to extensively use bronze to make utensils. And ushered in the peak period of Chinese bronze culture, which is the Bronze Age of China. The period includes Xia, Shang, Western Zhou, Spring and Autumn, and early Warring States, l……

The selection of copper sleeve is as follows: ZCuSn10Pb1 has high hardness, excellent wear resistance, is not prone to biting, has good casting and cutting performance, and has good corrosion resistance in the atmosphere and fresh water. Wear resistant parts that can be used for high loads (below 20Mpa) and high slidin……