72 thlalang cu lumternak he.

■ A ttha deuhmi thazaang khonnak le lumnak khamnak riantuannak.
■ Hmunhma nih khan khaan pathum a ser, cu nih cun aw khamnak, lumnak khamnak le thilrit phurh khawhnak kha a tthanchoter ngaingai.

■ A sawhsawh, aa dangmi, aa dawh i a zaangfah.
■ A ttha tukmi thiamnak, aa dawh i thli a ttha, a rawkralnak doh khawhnak sang, a cunglei kha anodizing asiloah thletnak thiamnak in zohkhenh, a nemmi le a nemmi kut hngalh khawhnak.

■ Hmuh khawhmi puai, a himmi le lungretheihnak a tei khomi.
■ A hmete square crimping suaisam nih, thli doh khawhnak a tthanchoter i, innka le thlalang hna kha a himter deuh, cu pin ah hmuh khawhmi a tlawmmi tthennak zong a hmuh khawh.

■ Ti a luannak a ttha i a muisam dawh.
■ A thupmi ti chuahnak sining suaisamnak cu hman a si, cun ti nih amah tein a ritmi phunglam kha ttha tein hman a si i ti chuahnak kha a nem deuh nakhnga le ruah ti a luang tthan lonak hnga caah a si. Ruah ti cu thlichia tih loin khaan chungin rang tein a chuak kho.

■ Thli lum le lumnak khamnak, lumnak kha chiah.
■ PA66 insulation strip le vertical isotherms design he, cu nih cun thli lum le lumnak thlennak kha ttha tein a kham.

■ Insulation tthen nih a kulh.
■ EPDM sealing strip cu a ttha tukmi tarnak doh khawhnak, hnahnawhnak doh khawhnak le khuacaan doh khawhnak a ngei, cu nih cun innka le thlalang ti le thli a luh khawhnak a tthanchoter, caan sau a hman khawh.

■ Inn himnak kha a sang deuhmi thazaang le a thuhnak he fehter, innka le thlalang hna i thilrit phurh khawhnak le hneknak riantuannak kha a sang deuhmi siter, cun inn tthatnak caah chanthar mi hna nih an halmi sangpi kha tlinter.