PIR board ngu ai gaw, polyisocyanurate foam board ngu ai ga si hpe kadun ai hku tsun ai rai nna, PU (polyurethane) hpe madung tawn nna, grau kaja hkra galaw da ai, n-gun ja ai n-gun ja ai arung arai langai mi re. Isocyanate hte polyols ni a ratio hpe gram lajang nna, grai kaja ai wan n-gun shayawm ai tsi ni hpe jat bang ai hku nna, grau ngang grin ai triazine ring hkrang hpe shabyin ya lu ai, katsi ai hpe ninghkap lu ai atsam hte wan n-gun hpe grai shatsaw ya lu ai-hpa majaw nga yang, B1 wan n-gun shayawm ai madang de du wa lu ai, self{4}mo}moval,mo,extinging density, nbung katsi ai shara hta loi loi hte n lwi ai. Htunghking XPS extruded polystyrene board ni hte shingdaw yu yang, PIR gaw n-gun n law ai (0.022W/(m·K) hta n law ai (sh) maren sha) n-gun n law ai, n-gun n law ai, n-gun n-gun grau law ai, n-gun n-gun n-gun n-gun hte n-gun n-gun hpe hkam sharang lu ai masa lahkawng yan a matu grau htuk manu ai.
Ngai a nta npu na n-gun ja ai jak a matu insulation lata ai shaloi, lata la mai ai lam law law hpe shingdaw yu nna, hpang jahtum ndai blue PIR board hpe lata la ai. Dai hpe tawn da ngut ai hpang, ngang kang ai zawn hkam sha nna lagaw npu n hkrat sum ai, n-gun n rawng ai shara ni gaw san seng nna n hkrat sum ai, bunghku ni, npu na katsi ai pipe ni, katsi ai shara hpe tawn da na matu npawt nhpang langai hku nna pyi ngang ngang jum da ai. Grau nna myit simsa shangun ai lam gaw, blue hue gaw dye n re; dai gaw wan hkru ai baw hpe maren mara bra ayai mat ai majaw byin pru wa ai masat kumla re. Kaji ai jut langai hpe wan nat kau ai shaloi, wan hkut hpraw hpe sha shapraw nna, wan hkut shinggrup wa ai hte rau wan hkru ai hpe jahkring kau ai. Nta dingsa shinggan bunghku ni a kata na insulation hta lang ai shaloi, katsi majan aten hta hkuwawt ni grup yin hta hka lim ai hpe pat shingdang ya nna, katsi ai aten hta ntsa gawk hta n-gun n rawng ai hpe koi ya ai. Tsi mawan katsi ai shara kaji langai mi hta bang da ngut ai hpang, nbung katsi ai lam hpe grai shayawm ya lu nna, compressor gaw grau nna shim lum ai hku hpaw nna jahkring kau lu ai.
