It is unneccessary. Now the technology of geotextile is mature, so the quality of it will not be too bad. Paying great attention to the brand is also completely unnecessary. I would ask do you check the brand when buy pork? No. All pork is bought from the pork satll. There are only two possibilities when you attach too much importance to the brand. 1 you are advertising for yourself. 2, you do not understand the market. I suggest you buy it in the nearnest shop.
It is unnecessary. You are wasting your money if you buy it. However, it still depends on the brand of the geomembrane you bought.
It is completely unnecessary.
