The color of the marking strip, the color of the pipe layers - whether it has any meaning or functional content.
In our opinion, the more natural the color, the less likely it is that recycled material or some other additive has been added to the pipe. The natural color of polypropylene is transparent and it is difficult to dilute it with something in order to preserve it. Therefore, in our opinion, if you want to minimize the risks of counterfeiting, choose a natural color. There is no need to purchase blue, red, orange tubes.