The temperature in some factories and workshops gets higher and higher as hot summer comes. We know that temperature change will greatly affect the working accuracy of the precision CNC machine...
Steel structure (steel construction) is a kind of structure composed of steel materials, and it is one of the most popular building structures at present.
The unexpected COVID19 has caused a shortage of face masks. In order to alleviate the global face mask shortage amid the coronavirus pandemic, factories have been scrambling to make more surgical masks and KN95/N95 masks since February.
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