... light weight, not combustion, dissolution, non-toxic non-irritating, rich colors, low price and so on. Currently, most non-woven raw material is polypropylene ... to degrade, requires completion of 300 years to degraded, and non-toxic form in the environment into the next cycle, if ... through natural decomposition, the maximum life span of only 90 days, placed in indoor decomposition 8 years, so as not ...