1). Ginawa ng espesyal na fibrous na papel na may mataas na moisture permeability, magandang air tightness, anti-rends, aging resistance, anti-mildew atbp. 2). Ang frame ay ABS, maganda, hindi madaling masira, mahabang oras ng serbisyo, pro-environment, magandang air tightness, siguraduhin ang intensity at higpit...
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