Ama-coil / amashidi we-prepainted yensimbi abizwa nangokuthi amakhoyili / amashidi e-color coated, ngokuvamile enziwa ngokuhlanganisa (roll coating) ungqimba ku-substrate noma i-bonding film yefilimu abese ebhaka amakhoyili / amashidi wokugcina. Izikhonkwane zingaphansi kwensimbi yensimbi (PPGI) noma i-galvalume iron coils (PPGL), i-aluminium coils (PPAL).

Amakhoyili wensimbi / amashidi alungiselelwe ayizinto zokwakha ezintsha ezikhula ngokushesha eminyakeni yamuva emhlabeni wonke. Ibhekana nokuqunjelwa ngamakhemikhali, ukugoqa kokuqala, ukugoqa kokugcina nezinye izinqubo emgqeni wokukhiqiza oqhubekayo. Ukuhlanganiswa kuyalingana, kuzinzile futhi kufanelekile, kungcono kakhulu kunelesi lokufafaza lokuxubha noma ukupenda ngebrashi kwezingxenye zensimbi ezakhiwe.

Amakhoyili wensimbi / amashidi alungiselelwe anemhlobiso omuhle kakhulu, ukubumba, kanye nezinto ezinhle zokumelana nokugqwala. Ukunamathisela inhlanganisela kulungile futhi ngeke kushintshwe isikhathi eside. Ngoba insimbi elungiselelwe ngaphambili ingathatha isikhundla sokhuni, iyinto esebenza kahle yokwakha, ngokulondolozwa kwamandla, ukuvimba ukungcoliswa kanye nomphumela omuhle kwezomnotho.