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202301-18How should the goods in the chemical warehouse be classified?In a word, the specific analysis of the specific situation should be supported by data. Generally, the warehouse can be divided into large, medium, small or large... -
202210-15What is the raw material of plastic particlesGeneral plastics: polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyester, polyurethane, etc Engineering plastics: nylon, polytetrafluoro-polyformaldehyde, polycarbosilane, etc -
202203-20Is HDPE toxic?The properties of polyethylene vary from variety to variety, mainly depending on the molecular structure and density. Specific gravity: 0.94-0.96g/cm3. Molding shrinkage: 1.5-3.6% -
202103-12Classification of plastic particlesIntroduction to PE recycled plastics: polyethylene (PE) --- milky white translucent and waxy when not colored; It feels slippery when touched by hand. It is soft and flexible, and can stretch slightly. -
202008-23Green chemical industry and sustainable developmentIn today's scientific and technological competition, the transformation and upgrading of the chemical industry is "two substitutions and one promotion", that... -
201905-07Quality Standards for Chinese Medicine Intermediates in Three Drug StudiesWhether the impurity control strategy is effective does not necessarily need to be confirmed by testing, but should be judged according to the level of the impurity on the quality risk of finished products. Take the control...
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