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According to the purification needs, the air purifier can be divided into: (1) Purified type. ...
Polymer material: macromolecular material, based on polymer compounds. Polymer materials are c ...
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In terms of publicity, the customer face of the security industry is relatively concentrat ...
During the transition period, the chemical product line gradually became more abundant. Si ...
First, you should consider the environment and the effects to be achieved. If the indoor soot ...
In order to improve the quality of Eri silk hand spinning y ...
Luminous flux: The sum of the amount of visible light emitted by the source per second, which ...
1. Vacuuming: In addition to the attachment on the surface of the floor and some adhesives, gl ...
Walking along the Qiantang River embankment, the junction o ...
For the future, China’s economic operation is still in a critical period of consoli ...