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2017 - 05 - 09
The number of clicks: 41
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2014 - 07 - 01
The number of clicks: 131
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2014 - 07 - 01
The number of clicks: 118
The definition of plastic Plastic is a kind of macromolecule organic material, making resin as the main component and shaping into a certain shape under certain temperature and pressure and could relain the shape under room temperature. Resin refers to a organic polymer that usually has a range of converting or melting when heated, and with mobility by external force when transforming, it is solid or semi-solid or liquid under room temperature, it is the most basic and most important component of plastic. Broadly speaki...
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2014 - 07 - 01
The number of clicks: 120
(1) Carpet stainsA. Stains, dirty distribution at the carpet levelThe multi-layer structure of the carpet makes it easy to bury stains and dirt. Stains not only stay on the carpet surface, but also deep into the fibrous tissue entanglement of the care layer. Lime, sand deep into the second, third supporting layer, becoming hidden dirt, and constantly damage the carpet fiber. The carpet is constantly wiped, stains, dirt will be buried deeper and deeper.B. Blanket stains, dirt classification:a. Water-based and dry stains, dirt  Most of the carpet stains are water-ba...
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