September 2022
Where to buy Hangzhou gold jewelry is cheaper?
Where to buy Hangzhou gold jewelry is cheaper? Is the prices of gold jewelry gold lower than the offer of other brands? Last week I went to the jewelry from Yuewang Specialty Store and found that it seems that the quotation of other brands is slightly lower than other brands. Will it be false?
What are the control methods of powder coating fluidity
Method of controlling free flow of finished powder 1.1 The main component of low temperature pulverized powder coating is resin, and the molecular weight of resin is low, generally only several thousand, the softening point is generally not more than 115℃, the softening point of epoxy resin is only about 90℃. The glass transition temperature …
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