樓頂大字分為男人j進入女人j內部免費網站:發光字(zi)和(he)不發光(guang)(guang)兩(liang)種。發光(guang)(guang)字(zi)(zi)分(fen)為吸(xi)塑(su)字(zi)(zi)和(he)LED外(wai)露(lu)燈發光(guang)(guang)字(zi)(zi)，不發光(guang)(guang)字(zi)(zi)按材料(liao)分(fen)為鈦金(jin)(jin)字(zi)(zi)，不銹(xiu)鋼字(zi)(zi)，烤漆字(zi)(zi)。樓(lou)(lou)頂大字(zi)(zi)即是(shi)由(you)鋼結(jie)構(gou)支撐架和(he)金(jin)(jin)屬字(zi)(zi)形組成(cheng)(cheng)(cheng)的大型(xing)(xing)廣告字(zi)(zi)。鋼架一般由(you)(鍍鋅)角鐵焊成(cheng)(cheng)(cheng)片梯或(huo)者方(fang)籠制成(cheng)(cheng)(cheng)，樓(lou)(lou)頂發光(guang)(guang)字(zi)(zi)字(zi)(zi)形由(you)不銹(xiu)鋼板或(huo)鍍鋅板做字(zi)(zi)殼，內置LED模(mo)組，吸(xi)塑(su)字(zi)(zi)字(zi)(zi)面由(you)亞克力板制作。LED外(wai)露(lu)燈發光(guang)(guang)大字(zi)(zi)則(ze)是(shi)在(zai)金(jin)(jin)屬板上沖好孔，然后(hou)再用(yong)激光(guang)(guang)切割成(cheng)(cheng)(cheng)型(xing)(xing)，.后(hou)焊接成(cheng)(cheng)(cheng)字(zi)(zi)形，裝燈。固定(ding)在(zai)鋼架上完(wan)成(cheng)(cheng)(cheng)。