(1) The thickness of the sheet is uneven. It is necessary to adjust the technological conditions of production and control the thickness uniformity of the sheet. When hot forming, it should be heate
PVC spot market atmosphere followed weakness, the mainstream prices have been loose. Due to the relatively tight supply of spot goods, the adjustment range of PVC spot price is not large, and it is
In December, the domestic polypropylene aggregate market continued to decline. The continuous high level of the supply side made the market more worried, while the follow-up strength of the demand s
(1) The sheet is too hot. The following methods can be adopted to exclude:
Shorten the heating time properly.
Reduce the heating temperature properly.
(2) The melt flow rat
