⒈ The dispenser is divided into two types: tie type and screw type. In terms of function, it is divided into spray, foundation cream, lotion pump, aerosol valve, and vacuum bottle.⒉The size of the
A. The dispenser is divided into two types: tie type and screw type. In terms of function, it is divided into spray, foundation cream,
PE (polyethylene):PE is the synthetic resin with the largest output in the world and the plastic packaging material with the largest consumption. Polyethylene products are divided into three types: low densit...
First, the development history of plastic bottles:In the 1980s, with the continuous introduction of advanced plastic bottle production lines from abroad, the prelude of replacing "glass" with "plastic" was op...
In industrial and agricultural production and daily life, there are many cases of lid cracking caused by thermal expansion and cold contraction, which directly affects the circulation and use of commodities, causes liqui...
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