亚洲AV无码专区国产|日本不卡一级片一区视频|亚洲日韩视频欧美|五月天色网站av|在线视频永久免费|五级黄色视频免费观看性|女人看黄色视频的链接|黄网络在线看三级图片|特级一级少妇亚洲有码在线|日本无码高清免费

Home >

Technology Olympics, Old Sports Shoes Make Artificial Lawn.

2008/8/13 14:56:00 41822
???     Fran?ais  English  中文

Editor's note: as the Olympic Games are drawing near, readers are increasingly eager to learn about all aspects of the Olympic Games.

From sports equipment and training.

  • Related reading

Expert Weapon And Shoe Inspection Method

Leather knowledge
|
2008/8/5 12:49:00
41793

Classification And Receipt Of Leather Garments

Leather knowledge
|
2008/6/13 11:42:00
41937

Common Knowledge Of Leather Color Preparation

Leather knowledge
|
2008/6/13 11:14:00
42132

Leather Clothing Selection, Authenticity, Maintenance, Washing

Leather knowledge
|
2008/6/12 11:07:00
41935

Fur Clothing Store

Leather knowledge
|
2008/6/11 17:48:00
41897
Read the next article

Forming Method For Leather Upper

Leather upper molding method is to first make a mold that contains the actual shape of leather upper, and then heat the mold to 100-140 degrees. Then a single leather upper is placed on the mold and pressed and closed, and then stripped and removed. The essence of the leather upper is that the leather upper is rapidly heated, rapidly stretched, deformed and pressed out of the pattern, and then molded at high temperature. When the mold is released, the leather upper shoe has been changed into a l