The first method is to make the waterproof coating of the tent porous, with a pore size of 200-500 microns, and implant a certain substance in the hole, the implant absorbs expansion when waterproof and blocks the hole, preventing water from passing through the hole Through, when the water is not released, the water shrinks and opens the hole, allowing the air to pass through the hole, so that the knife is waterproof and breathable. Tamen, in pore mole est facile ad imperium in productionem processus. Eius pore amplitudo magnitudine magna et habet parum effectus in IMPERVIUS perficientur et aere permeability, quia innansionem ad angustos in poris et refulget in aperto poros. Et effectus pore mole in IMPERVIUS perficientur et breathability.
The second is to make the waterproof layer of the tent perforated, and the pore size is less than 100 microns, so that only air can pass through the holes, and no water can pass through the holes, so as to achieve the purpose of waterproof and breathable. Tamen, in pore mole de coating est difficile ad imperium in productio processus. Exempli gratia, si pie mole est parva, in IMPERVIUS perficientur est bonum, sed aere permeability est pauper. Si pie magnitudine est magna, in IMPERVIUS perficientur pauper est, sed aerem permeability pauper est, sed aere permeability est bonum.
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