抗静电无尘背包尺寸：40CM*35*20CM，前后片大面料，大拉链和底围都是80S加厚1CM大网格,PVC网格抗静电可以达到10的8次-9次

1.主袋是5号大拉链长74CM有两个金属电白拉头，

2.前袋材料是55S大网格，尺寸是长20CM*高28CM,5号拉链 有一个金属拉头。

3.前大袋材料55S大格子 ，尺寸长29CM*高30CM*宽5CM ，一条68CM的5号黑色拉链配了2个金属拉头。4.主袋里面两个内袋·有一个17*35内袋，17*40CM有两条折线，更大的容量。

5.后背有一个2.5CM宽*长22CM的手提，

6.大背带也是由2片55S网+2片1200D白色牛津布料+ 4MM厚的珍珠棉组成，并有四方叉和人字纹加固。

7.小背带是2.5CM宽网格和织带双层加厚、 也有四方叉和人字纹加固，侧面有一个钩子是为了方便挂帽子。

    The size of antistatic dust-free backpack: 40cm * 35 * 20cm, the main fabric is 30s mesh + a layer of 40seva material, the big back strap is also 30s mesh + imitation sheepskin with 4mm thick pearl cotton inside, and it is reinforced with square fork and herringbone pattern. The strap is 2.5cm wide mesh and double-layer thickened webbing. It is also reinforced with square fork and herringbone pattern. There is a hook on the side to facilitate hanging the hat.

抗静电无尘背包尺寸：40CM*35*10CM，主面料是30S网格+有一层40SEVA 料，大背带也是30S网+仿羊皮内夹4MM厚的珍珠棉，并有四方叉和人字纹加固。小背带是2.5CM宽网格和织带双层加厚、 也有四方叉和人字纹加固，侧面有一个钩子是为了方便挂帽子。

 静電気抵抗リュックサックのサイズ：40 CM*35*10 CM、主な布地は30 Sグリッド+40 SEVAの材料があります。大背紐も30 Sネット+羊の皮の中に4 mmの厚い真珠綿を挟みます。四角いフォークと人字の紋様が補強されています。小さい背もたれは2.5 cm幅のメッシュとリボンが二重に厚く、四角いフォークと文字の紋様が補強されています。側面には帽子を掛けやすいようにフックがあります。

    The size of antistatic dust-free backpack: 40cm * 35 * 10cm, the main fabric is 30s mesh + a layer of 40seva material, the big back strap is also 30s mesh + imitation sheepskin with 4mm thick pearl cotton inside, and it is reinforced with square fork and herringbone pattern. The strap is 2.5cm wide mesh and double-layer thickened webbing. It is also reinforced with square fork and herringbone pattern. There is a hook on the side to facilitate hanging the hat.