Precautions for operation: The operators must be specially trained and strictly abide by the operating procedures. It is recommended that operators wear self suction filter type dust masks and chemical safety goggles. Keep away from kindling and heat sources. Smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Avoid contact with oxidants, acids and halogens. Handle with care to prevent package damage. Fire fighting equipment and leakage emergency treatment equipment of corresponding varieties and quantities shall be provided. Empty containers may retain harmful substances.

Copper has the advantages of low resistivity, low electromigration rate, and low price. It is one of the ideal substitutes for the silver palladium internal electrode. However, its chemical properties are relatively active. In the air, powdered copper with large specific surface area is very easy to be oxidized, and the surface will form Cu2O and CuO films, which will rapidly reduce its conductivity, or even become non-conductive.