翻译：今天我们将测试一款弹性更好的材料为这款盒子，希望可以有所改善，稍后我发会给你图片。

I‘m so sorry, you know,the corners of this quadrate boxes are hard to avoid wrinkel.And the materieal's elasticity is small which we used. We will try our best to make it better,but not to completely avoid.
Today we will test a kind of box which has a very better elasticity.I hope our product will imrove,and I will send you some pictures later.
求求采纳 看我这么辛苦翻译的份上，祝我签到成功

Because the square box angle (the corners) is indeed difficult to avoid fold (Wrinkle), and the elastic material we use now is smaller, in the article we will try to make it better, but can not be completely avoided. Today we will be testing a better elastic material for the box, hope can be improved, later I send will give you pictures.