For covering: Civil engineering and construction machinery, baseball field, playground, tennis court, swimming pool. For civil engineering seat: curing sheet, heat insulation. For agricultural and fishery industries: Import timber fumigation, hotbed sheet, working threshing, drying, and irrigation gutter.
I connected the two sheets and saved water, I made a pool for a month, but there was almost no water leak and it was effective. However, I do the same thing every year, so how many years can I use? Every few years I exchange it for a new seat. Washing after use washing with a high pressure washer and deck brush until last year, but this year it is only a high pressure washer as it hurts coatings and materials. Searching for a thick blue sheet is difficult every time, but as a material almost this time, it was a reasonable product.