Mgbe afọ gachara mmepe ngwa ngwa, china y bụ onye na-azụ ahịa aluminom na onye na-emepụta ihe zuru ụwa ọnụ, na ike ya zuru oke na-abawanye ngwa ngwa. N'ihe gbasara akụrụngwa , nnukwu extrusion nke china , na-ekpo ọkụ na-ekpo ọkụ , na-emecha ihe na-agbagharị agbagharị agbagoro agbago okwu ọnụ. Aluminom maka njem buru ibu enyela onyinye dị mkpa maka mmepe nke ngwa ngwa ngwa ngwa nke china.

Steel mgbe niile bụ isi ihe na ụgbọ ala n'ichepụta.But na ọha mmadụ na gburugburu ebe obibi nchebe na ume na-azọpụta olu na-esiwanye elu, mba mmanụ ụgbọala oriri amụma nēche tighten, na-eji ọkụ na-etinye n'ihu elu chọrọ maka ụgbọ nchekwa, nke amanye automakers ka. na-achọ ihe eji ewu ụgbọ ala siri ike na nke dị mfe karị. Ojiji ígwè siri ike bụ.

Achọ maka akụkụ ụgbọ ala na-abawanye kwa ụbọchị, akụkụ nke akụkụ aluminom nke ụgbọ ala, dị ka injin, oghere ụgbọ ala, nwere ike belata nke ọma. Na mgbakwunye, aluminom radiator bụ 20-40% ọkụ karịa ihe ndị ọzọ, na aluminom ahụ bụ karịa 40% Mkpa ọkụ karịa nke ígwè ahụ, mmanụ ụgbọala oriri nwere ike ibelata n'oge n'ezie ọrụ okirikiri o..