... shape and made by heating, melting, spinning, pulling and molding with nontoxic and tasteless polypropylene particles. It is not only used ... ) Filter accuracy: 1µm, 3µm, 5µm, 10µm, 20µm, 30µm, 60µm3) Advantage: This element has large ... ″, 20″, 30″, 40″8) Structural classification: with or without a skeleton, caps at both or not.9) We have professional designers with 15 years experience ...