A na-akpọkwa coils / mpempe akwụkwọ ndị a kwadebere dị ka agba mkpuchi agba / akwa, na-adịkarị site na mkpuchi (mpịakọta mkpuchi) oyi akwa na mkpụrụ ma ọ bụ na-ejikọta ihe nkiri organic ma tinyezie ihe mkpuchi ikpeazụ / akwa. Ihe nọchiri anya ya bụ ihe ndị gbara ọkpụrụkpụ (PPGI) galvanized steel (PPGI), coils aluminom (PPAL).

Ihe mkpuchi / igwe eji agba nchara edo edo bụ akwa ụlọ ọhụrụ na-eto n’ike n’ike n’afọ na-adịbeghị anya n’ụwa niile. Ọ na-ata ata kemịkal, mkpuchi mbụ, mkpuchi ikpeazụ na usoro ndị ọzọ n'usoro mmepụta na-aga n'ihu. Ihe mkpuchi a dị otu, nke kwụ ọtọ ma dịkwa mma, ọ dị mma karịa akwa mkpuchi ma ọ bụ nhicha ahịhịa nke akụkụ metal ahụ ekara.

Ihe mkpuchi / igwe eji agba nchara edo edo / akwa nwere mma mara mma, ịkpụzi ya, yana ezigbo njiri ọgụ nguzogide. Ihe mkpuchi mkpuchi dị mma, a gaghị agbanwe ya ogologo oge. N'ihi na ígwè a kwadebere nwere ike dochie osisi, ọ bụ ihe eji arụ ọrụ eji arụ ọrụ, yana ịchekwa ike, na-egbochi mmetọ na ezigbo akụ na ụba.