中性包装,包装前产品上的灰尘及其他脏物必须清除干净，整个包装过程必须注意清洁，以保证包装质量。防爆电器产品和电力传动控制装置须罩上塑料袋后再装入包装箱，外包装采用简易包装的产品，须先用塑料袋包装。 　　装入箱内的产品必须可靠地固定，不应窜动。固定方式根据产品的结构选定，以螺栓固定或以木楞（块）垫紧压紧。 Neutral packing, dust and other dirt products must be cleaned prior to packaging, the packaging process must pay attention to clean, to ensure the quality of packaging. Explosion proof electrical products and power transmission control device shall be covered with plastic bags and then into the packaging box, the outer packaging using simple packaging products, must first use plastic bags. The products in the box must be fixed reliably and should not be moved. Fixed way according to the product structure selected by bolt or in wooden flute (block) tight pressing pad.

Purity W1≥99.95% Specific gravity ≥19.1g/cm3~19.3 g/cm3 Crystal grain number ≥ 10,000PCS/mm2 Hardness ≥ 71-74HRA Size allowable tolerance d.h±0.05mm (It can produce the goods according to the client's specific drawings.) Seat nail material is low carbon steel whose carbon content is equal to or less than 0.10%. The copper purity of copper welding material is equal to or larger than 99.95%. Welding point strength ≥ 83MPa