国产一级—片内射视频播放蘑菇,伊人久久国产,欧美日韩有码,亚洲一级性爱

<source id="u7nrd"></source>
<source id="u7nrd"><menuitem id="u7nrd"></menuitem></source>
<rp id="u7nrd"></rp>

News

Technical characteristics of multilayer co extrusion blown film production equipment

In the global plastic packaging film market, the proportion of multi-layer co extrusion film with nylon is inc...

2021-03-27 1464
Effect of film blowing process on film properties

Blown film technologyThe process flow of blown film is plasticizing and extruding material to form tube blank,...

2021-03-27 1582
High end market -- the inevitable trend of plastic film blowing machine development

The rapid development of China&#39;s food industry has led to the development of the food packaging industry; ...

2021-03-27 1361
Several kinds of plastic packaging films produced by film blowing machine

Plastic packaging and plastic packaging products have become more and more popular in the market. Especially c...

2021-03-27 1342
Inspection and maintenance of film blowing machine

Daily inspection and equipment maintenance1. Check whether the temperature self-control is in good condition a...

2021-03-27 1420
How to eliminate the wrinkle of blown film

In the blowing process, the instability of the film bubble from entering the air ring to the maximum diameter ...

2021-03-27 1657