☆ Ụdị efere atọ dị iche iche:
● corrugated, studded, dimpled ụkpụrụ
HT-Bloc Exchanger na-ejigide uru nke ot efere & etiti okpomọkụ Exchanger, dị ka nnukwu okpomọkụ nyefe arụmọrụ, kọmpat size, mfe ihicha na ịrụzi, Ọzọkwa, ọ ga-eji na usoro na elu mgbali na elu okpomọkụ, dị ka mmanụ refinery, chemical ụlọ ọrụ, ike, ọgwụ, ígwè ụlọ ọrụ, wdg.