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消(xiao)費(fei)者(zhe)在選購(gou)時可以(yi)從以(yi)下三個(ge)方面辨別假(jia)“中(zhong)(zhong)空(kong)(kong)(kong)”和真中(zhong)(zhong)空(kong)(kong)(kong)：玻(bo)璃(li)(li)是(shi)否密(mi)封(feng)(feng)。不(bu)少(shao)假(jia)中(zhong)(zhong)空(kong)(kong)(kong)玻(bo)璃(li)(li)門(men)窗的(de)(de)兩片玻(bo)璃(li)(li)是(shi)用(yong)中(zhong)(zhong)空(kong)(kong)(kong)玻(bo)璃(li)(li)加工(gong)設備(bei)中(zhong)(zhong)空(kong)(kong)(kong)玻(bo)璃(li)(li)加工(gong)設備(bei)黑色PVC發泡條黏(nian)合(he)的(de)(de)，并(bing)沒有(you)密(mi)封(feng)(feng)效果(guo)(guo)。而真正的(de)(de)中(zhong)(zhong)空(kong)(kong)(kong)玻(bo)璃(li)(li)門(men)窗是(shi)用(yong)專(zhuan)用(yong)密(mi)封(feng)(feng)膠條黏(nian)合(he)玻(bo)璃(li)(li)的(de)(de)，可以(yi)保證一(yi)定密(mi)封(feng)(feng)。其次，真中(zhong)(zhong)空(kong)(kong)(kong)玻(bo)璃(li)(li)兩片玻(bo)璃(li)(li)之(zhi)間有(you)一(yi)條鋁(lv)(lv)隔(ge)條，鋁(lv)(lv)隔(ge)條上還有(you)許多透(tou)氣孔，里面放(fang)上干燥劑(ji)，可以(yi)吸收氣體中(zhong)(zhong)的(de)(de)水分(fen)，防止玻(bo)璃(li)(li)門(men)窗受熱后出現(xian)“霧蒙蒙”的(de)(de)現(xian)象，而假(jia)“中(zhong)(zhong)空(kong)(kong)(kong)”玻(bo)璃(li)(li)沒有(you)這些設備(bei)。之(zhi)后，實地(di)測試門(men)窗的(de)(de)隔(ge)音效果(guo)(guo)。真中(zhong)(zhong)空(kong)(kong)(kong)玻(bo)璃(li)(li)門(men)窗的(de)(de)隔(ge)音效果(guo)(guo)非常(chang)好，而假(jia)“中(zhong)(zhong)空(kong)(kong)(kong)”門(men)窗的(de)(de)隔(ge)音效果(guo)(guo)則(ze)很一(yi)般。

此外，玻(bo)(bo)璃(li)清洗機(ji)玻(bo)(bo)璃(li)清洗機(ji)型材(cai)里(li)安裝(zhuang)的寸(cun)鋼(gang)也(ye)有質量上(shang)的差異。好的寸(cun)鋼(gang)厚(hou)度在1.2毫米(mi)以(yi)上(shang)，而劣(lie)質型材(cai)使用(yong)的寸(cun)鋼(gang)往(wang)往(wang)厚(hou)度不(bu)夠，甚至還有黑心商(shang)家(jia)在型材(cai)里(li)套木(mu)頭來欺騙消(xiao)費(fei)者，這些(xie)都要(yao)注意。

型(xing)(xing)材(cai)質量的(de)(de)辨別優質中空玻璃(li)(li)門(men)窗使用(yong)(yong)的(de)(de)是優質型(xing)(xing)材(cai)，而劣質中空玻璃(li)(li)門(men)窗使用(yong)(yong)的(de)(de)是低檔型(xing)(xing)材(cai)，有(you)的(de)(de)甚(shen)至是動了手腳的(de)(de)二次回收型(xing)(xing)材(cai)（外觀貼上知名型(xing)(xing)材(cai)的(de)(de)薄膜，以次充好(hao)）。優質的(de)(de)型(xing)(xing)材(cai)看上去(qu)表面光(guang)滑細膩、平整潔凈(jing)、顏(yan)色(se)(se)均勻；沒(mei)有(you)裂痕、氣泡；焊接處(chu)沒(mei)有(you)斷(duan)裂開焊的(de)(de)現(xian)象；硬度(du)厚(hou)度(du)足夠，用(yong)(yong)榔(lang)頭(tou)敲擊型(xing)(xing)材(cai)表面不出現(xian)破裂。而劣質的(de)(de)型(xing)(xing)材(cai)顏(yan)色(se)(se)不均勻，有(you)氣泡雜(za)質，用(yong)(yong)榔(lang)頭(tou)敲擊會出現(xian)破裂，甚(shen)至用(yong)(yong)手捏都會變形。

據介紹，正(zheng)規(gui)的(de)中(zhong)(zhong)(zhong)空(kong)玻(bo)璃(li)(li)生產線(xian)中(zhong)(zhong)(zhong)空(kong)玻(bo)璃(li)(li)生產線(xian)中(zhong)(zhong)(zhong)空(kong)玻(bo)璃(li)(li)門(men)窗 ，要(yao)先(xian)將(jiang)兩片玻(bo)璃(li)(li)用密封膠條密封好，將(jiang)中(zhong)(zhong)(zhong)間抽成(cheng)真空(kong)，再填(tian)入惰性氣體。這樣的(de)結構使得真正(zheng)的(de)中(zhong)(zhong)(zhong)空(kong)玻(bo)璃(li)(li)門(men)窗具有(you)(you)良好的(de)隔音隔熱性能(neng)。而前不(bu)少廉價劣質的(de)“中(zhong)(zhong)(zhong)空(kong)”玻(bo)璃(li)(li)門(men)窗只是(shi)簡單(dan)將(jiang)兩塊(kuai)玻(bo)璃(li)(li)膠合起來，并(bing)沒(mei)有(you)(you)經(jing)過上述(shu)處理，因(yin)此也沒(mei)有(you)(you)中(zhong)(zhong)(zhong)空(kong)玻(bo)璃(li)(li)所有(you)(you)的(de)那種(zhong)隔音隔熱效果(guo)。