Wire mesh for the first layer, the second filter cotton, the third layer of wire mesh,then pleating it.The width of the fold is about 3.5cm
skype:annewang936
wechat:annebenevolence
email:annewang@lmfiltermaterial.com
https://www.youtube.com/channel/UCjP8VtBbLWiZZi2bqL_HUOA
没有评论:
发表评论