Nā ʻano o nā wili kila kuhiliʻole: ʻO ka paipu ʻoihana ʻenehana, coil, U-tube, puʻupuʻu kaomi, paipu hoʻololi wela, wai paipu, spiral coil ʻO nā hiʻohiʻona huahana: kiʻekiʻe wela ke kūpaʻa mahu, ka hopena corrosion resistance, ammonia corrosi...
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