Plastkorkide plastvoolikutele esitatavad nõuded
Plastikate valmistatakse tavaliselt survevalu teel polüpropüleenist (PP). Kvaliteetsel -plastmassist kattel ei tohiks olla ilmseid kokkutõmbumisjooni ega eesriideid. Eraldusjoon peab olema sile, suurus peab olema täpne ja torupeaga ühtlane ning ei tohiks tavapärasel kasutamisel olla rabe. Konstruktsioonikahjustused, nagu praod, praod jne. Näiteks kui avanemisjõud on vahemikus, peaks klappkate suutma purunemata vastu pidada rohkem kui 300 voltimisele.
Now some manufacturers, and this seller have no bottom line, only what you can't think of, what you can't do without it, no matter what the price is, the merchants are all for the purpose of making money. This is not something I bought on Taobao a few days ago. When I bought it, it looked good, but it was different when I received it. The thing turned out to be made of plastic hoses. I almost lost my temper. I contacted the merchant, It said that it is environmentally friendly, but things are not like this at all. I have never heard that this thing is made of plastic. He said that you can return it. I asked, the return shipping cost is 120 yuan, and I am speechless.
