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.

A sintered tungsten target for sputtering, characterized in that it exhibits a relative density of 99 % or more, an average crystal grain diameter of 100 μm or less, an oxygen content of 20 ppm or less and a deflection force of 500 MPa or more; and a method for preparing the tungsten target with stability at a low cost, which uses improved production conditions for a raw material tungsten powder and improved sintering conditions. The sintered tungsten target has a high level of density and a high degree of the fineness of a crystal structure which have never been achieved by a conventional pressure sintering method and is markedly improved in deflection force, which has resulted in the significant decrease in the occurrence of particle defects.