- Issue Time
Qingdao Hengsheng Plastic Co.,Ltd was a professional coroplast sheet manufacturer established in 2009.
Our main products:pp coroplast sheet. foldable plastic packing box. etc.
In the cold winter, plastic products become fragile.
It comes down to a lack of resilience
Usually a 2-6mm coroplast sheet we do gsm during 200-2000g/m2
Gram weight is bigger, board hardness is stronger.
But regardless of the price, not all coroplast sheet suitable for making very large grams
So we increased the toughness of the boards