Dai ni na aten na hpaga lam hte mung shawa nta ni hta n mai malap ai katsi ai hpe yeng seng kau ai jak langai hku nna, fine tube radiator a lit gaw asan sha nga ai katsi ai hpe htawt sit ai hta grau ai. Shi a laklai ai hkrang masa hte, n-gun law law hpe base tube ntsa kaw grai ni htep hkra lajang da ai majaw, nbung laru galai shai ai shara hpe grai jat shangun ai, dai hku nna kaja ai nbung hpe shapraw lu ai. Ndai hkrang shapraw ai lam gaw, hka lum ai, katsi ai hte bungli galaw ai shara ni hta n kaja ai nbung hpe bai gram lajang ai lam ni hta laklai ai bungli ni hpe madun dan lu ai.
Grau nna, finen tube radiators ni gaw, hka lim ai aten (hka, hka htung (sh) nbung zawn re ai) hka n-gun hpe shayawm ya lu ai, katsi ai lam hpe lawan ladan shayawm ya lu ai, katsi ai hpe grup yin grup yin de lawan ai hku nna, n-gun n-gun n-nga hkra galaw ya lu ai. Katsi majan aten hta, katsi ai hte shim lum ai shara hpe shabyin ya na matu, katsi ai shara kaw na pru wa ai katsi ai hpe lawan ladan htawt sit ya lu ai; hka lum ai aten (sh) hpaga lam hta katsi ai aten hta, jak rung (sh) arung arai a shingra tara hku nna, n-gun rawng ai nbung katsi ai hpe atsawm sha la kau ya lu ai.
Dai hta n-ga, fine tube radiators ni hpe arung arai amyu myu hte galaw da ai, dai hta stainless steel, copper, aluminum, etc. ni lawm ai.Ndai arung arai ni gaw thermal conductivity kaja ai sha n-ga, n-gun n-gun hpe ninghkap lu ai atsam, nbung katsi ai hpe ninghkap lu ai hte kaga arawn alai ni hpe mung hkam sharang lu ai, grai sawng ai bungli galaw ai makau grup yin ni hpe hkap la lu ai, daw jau ai lam hpe mung jat ya lu ai. Dai aten hta, shi a n-gun ja ai hkrang masa hte n-gun rawng ai shara ni gaw, n bung ai masa ni hta katsi ai ra kadawn ai lam ni hpe hkap la lu na matu, jak rung kaba ni, hpaga lam hte seng ai nta ni, dinghku nta ni a matu htap htuk ai hkrang masa ni hte hkrang ni hpe tam lu shangun ai.
Tsun ga nga yang, finen tube radiators ni gaw, dai ni na shinggyim wuhpawng a ginra amyu myu hta, shanhte a n-gun ja ai, ngang grin ai, n-gun n rawng ai hku jung da ai hte, shinggyim wuhpawng rawt jat galu kaba lam hpe n-gun jaw ai hte, prat masa hpe grau kaja hkra galaw na matu ahkyak ai n-gun langai byin wa sai. Hpaji masa hte hpaji masa ni matut manoi rawt jat galu kaba wa ai hte grup yin hpe makawp maga ai lam hte n-gun n-gun hpe hkoi shap na matu masha ni ra sharawng ai lam ni hpe grau kaja hkra galaw ai majaw, anhte a prat hta grau nna shim lum lam hte shalan shabran lam ni hpe jaw ya lu na matu, fine tube radiators ni hpe matut nna gram lajang nna gram lajang na re ngu kam ma ai.