    UPVCŴʩ
    (1) UPVCŴĳƷ״ͳߴƫҪйع涨գԽƷӦڣ롣
    (2) װӦڷˢˢƽβڵʪҵϺС
    (3) ŴǽĽӵλãӦھ߿Ǻͱ߿кĽ150mmӵļӦ600mm
(4) ǽ֮Ҫ޻ĭϡ

