How to judge whether a clean sponge swab use high-density sponge or homemade sponge

In daily life, we use the mattress, cushion, sofa and most are using domestic sponge, high-density sponge is not common. In dust-free purification industry, some manufacturers, in order to reduce the production cost, the pursuit of profit. Using domestic high imitation of imported sponge, instead of high-density sponge. The quality of the product, you can imagine. The characteristics of high density sponge sponge swab swab and domestic import respectively? High-density sponge swab has good elasticity, uniform thickness, weight is lighter, stable quality, feel soft, slightly pull not easy broken, smells very pale, wipe the product is not easy to burst, cleanliness is stronger, wipe out almost slag, durable. Slightly different domestic sponge swab the heavier weight, elastic, feel is slightly hard, rough, smelled, wipe the product easy to burst, slag, not durable, price is cheap. So, to understand the characteristics of high density sponge sponge swab swab and domestic import, we can easily judge.