国产精品99久久久久久猫咪,亚洲国产精品一区二区制,亚洲 欧美 国产 日韩 字幕,亚洲男人的天堂色偷免费

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
av熟妇人妻一区二区三区| 美腿丝袜诱惑久久亚洲国产| 欧美日本高清一区二区高清| 日本一区二区三区大香蕉| 精品福利视频一区二区三区| 亚洲欧美日韩国产第七部| 东京热一区二区久久综合| 亚洲日韩精品无码专区站| 欧美 亚洲 动漫 另类| 国产AV无码片毛片一及| 国产精品天干天干在线观看澳门| 色综合网天天综合色中文| 下一站婚姻免费完整版在线观看| 激情五月婷婷视频在线观看| 欧美日韩人妻精品一区二区三区| 国产无遮挡又黄又爽在线观看| 日韩黄色av网站在线观看| 亚洲伦中文字幕另类不卡| 大香蕉在线视频在线视频| 久久久久久久久精品免费| 国产高清国产精品国产专区| 黑人与人妻无码中字视频| 91精品成人免费国产片| av免费观看亚洲一区二区| h片资源吧首页在线观看| 国产亚洲精品久久久久久久软件| 日韩亚洲一区二区三区在线| 亚洲欧美日韩性综合一区| 久久只有这里的精品69| 日本电影大全一区二区三区| 中文字幕在线精品视频入口一区| 国产精品又爽又粗又长又硬| 久久精品国产99精品亚洲| 无码抽搐高潮喷水流白浆| 亚洲色另类观看| 欧美 日韩 亚洲 少妇| 国产高潮三级片在线播放| 久久久久有精品国产免费| 亚洲欧洲国产精品香蕉网| 狠狠躁18三区二区一区| 久久精品观看|