Cov hauv qab no qhia txog qee yam uas yuav tsum tau xav txog hauv kev xaiv cov kav dej hauv tsev. Lub neej ntawm lub tsev: lub neej ntawm lub tsev siab dav dav yog teem rau ntawm 100 xyoo, thiab lub tsev ntau lub tsev yog teem rau ntawm 50 xyoo, thiab cov kav dej uas tau xaiv yuav tsum sib phim nrog nws. Nws yog ib qho nyuaj heev los hloov cov kav dej hauv cov tsev uas tau tsiv mus rau hauv, thiab cov khoom siv dej yuav tsum raug txiav tawm kom rhuav tshem cov khoom kho kom zoo nkauj; Kev xa dej kub: nws tuaj yeem muab faib ua cov kav dej txias thiab cov kav dej kub; Dej, xaiv cov kav dej sib txawv rau cov dej sib txawv, thiab feem ntau xaiv cov kav dej PPR rau cov dej haus, uas muaj cov yam ntxwv tsis muaj tshuaj lom, huv si, thermal rwb thaiv tsev, txuag hluav taws xob, thiab ua haujlwm kub zoo. Recyclable (ib puag ncig tus phooj ywg), weldable, hloov tau, thiab thermally conductive. Txheej txheej: Muaj cov ntaub ntawv qhib thiab tsaus nti, thiab cov txheej txheej raug nthuav tawm sab hauv tsev thiab sab nraum zoov. Cov kav dej yas yuav tsum tsis txhob raug tawm sab nraum zoov, vim lawv tau yooj yim raug rau lub hnub ci thiab ultraviolet rays thiab ua rau kev laus. Qee cov kav dej yas mos tsis haum rau sab hauv tsev qhib daim ntawv thov, thiab khoov thiab deformed los ntawm thermal expansion thiab txias contraction. Npog tso rau hauv lub raj lub qhov, phab ntsa embedded nyob rau hauv lub qab nthab, los yog faus nyob rau hauv lub leveling txheej, aluminium alloy lined nrog yas yeeb nkab, yuav tsum tsis txhob muab faus los yog embedded rau hauv phab ntsa vim cement corrosion.
