Take Jin Nuo solder as an example: pure copper powder, also known as copper powder or copper powder, is pure copper powder when the purity of Cu reaches over 99%. Brass powder is also called copper-zinc alloy powder, and the total purity of the main raw material Cu+Zn is above 99%. Bronze powder distinguishes lead-free bronze powder from tin bronze powder. The price is related to the content of particle size components, and the prices of different particle sizes are also different.