PTH hae toxic resolution, Dirll and CUT use laminate contain harzous substance,the Dry film and Wet film use the oil also contain toxic substance.

 
  • 那就多的去了,從一開(kāi)如的開(kāi)料樹(shù)脂粉塵到濕流程的甲醛/氨水/鹽酸/硫酸/氰化物;
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