Polymers are either natural or synthetic macromolecules composed of many repeating units (monomers) usually arranged in the form of a chain. Examples of polymers are silk, rubber, silicone, DNA and ...
Zhangjiagang, a county-level city in Suzhou, East China's Jiangsu province was approved to be one of pilot cities for national supply chain innovation and application. The city’s bonded area also ...
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