欧美日韩国产一二三四五区,国产区在线观看成人精品,91亚洲精品国产嫩草,国产丰满的富婆自拍对白,久久精品偷拍视频观看,国产av一区二区中文字幕,久久国产超碰女女av,久久不卡国产一区二区,欧美中文字幕一二三四区,亚洲欧美熟妇欲乱又伦

<delect id="d07zl"></delect>

    1. <rt id="d07zl"></rt>
        <rt id="d07zl"></rt>
        Welcome to Shenzhen Zhongyuan Plastic Co., Ltd!

        News



        Tel:(0755)27151698
        Fax:(0755)27150611
        Mailbox:szzyzcl@163.com / szzy@szzy99.com
        Add:Building A1 and A2, No.1 Industrial Zone, yuliu property company, Gongming town, Bao'an District, Shenzhen
        Industry information

        當(dāng)前位置:

        首頁(yè) News Industry information

        Manufacturing process of plastic shell

        Release time:2022-03-14

        With the development of the times, plastic shell has been more and more deeply into our life. Many friends can't avoid using plastic shell to deal with various things, such as the protection of computer power supply, the protection of safety tools, and the shell of power bank we use is plastic shell, so the plastic shell plays a great role in our life. It is such a frequent product that we may not know its production process.

        6.jpg


        Plastic shell production process 1: at the initial stage of the plastic shell production process, what we need to do is to prepare materials. In the process of material preparation, what we need to do is to check the quality of plastic shell materials and determine the types of materials used. Because there are usually more choices of plastic shell materials, we must make accurate choices.


        Plastic shell production process 2: after selecting materials, the plastic shell production process will come to the mixing and drying process. In this process, many friends do not know the specific function. In fact, the essence of mixing and drying is to remove the moisture in the material and reduce the occurrence of defects in the plastic shell injection molding process. If the moisture in the material cannot be reduced by 0.02%, irregular crazes will appear on the surface of the finished plastic shell, which will have a great impact on the appearance of the plastic shell.


        Plastic shell production process 3: the important production process of plastic shell must be injection molding process, which determines whether the plastic shell meets the standard process. If you want to process a good quality plastic shell, you must control the temperature, mold, injection method, injection speed and other factors, so this process also needs to be carefully completed.


        Plastic shell production process 4: the plastic shell comes to an end with the completion of injection molding. What we still need to do is to complete the quality inspection of the plastic shell, and then pack it out of the factory.

        Copyright: Shenzhen Zhongyuan Plastic Co., Ltd. | mold processing customized manufacturer. If you want to know the processing price of the factory, how much is it, and which is good, please contact us Yue ICP Bei No. 17060480
        亚洲女性午夜福利视频| 精品国产一区二区三区不卡| 中文字幕亚洲情99在线| 日本精品免费一区二区三区| 色哟哟国产精品一区二区| 亚洲中文有码在线观看| 欧美亚洲另类自拍丝袜| 秋霞鲁丝无码一区二区三区| 亚洲综合激情五月丁香六月| 不卡一区二区国产精品| 少妇人妻av毛片在线看| 偷窥中国丰满多毛老熟女 | 超碰在线一区二区三区| 国产三级黄色的在线观看| 99久热视频在线精品| 人妻av午夜综合福利视频| SAO虎在线精品永久观看入口 | 国产精品男人在线播放| 亚洲妇女黄色三级视频| 亚洲一区二区国产精品视频| 日本一区不卡高清在线观看| 一本色道久久综合av| 亚洲一区二区三区四区中文| 午夜视频在线观看一区二区三区| 日本人妻视频一区二区| 国产又粗又长又大又爽视频| 白浆国产精品一区二区| 内射内插视频在线观看| 成人深夜福利av在线| 成人av网址免费观看| 色惰日本视频网站WWW| 偷窥国产亚洲免费视频| 国产精品麻豆成人av| 国产精品性感美女av| 欧美精品一区二区三区在线| 熟女人妻一区二区三区| 国产麻豆精品视频在线观看 | 日韩精品视频在线一二三| 亚洲精品无码AV中文字幕| 不卡中文字幕在线观看免费视频| 邻居的丰满人妻中文字幕|