Zida zamakina a njerwa zodziwikiratu zimagwiritsidwa ntchito kwambiri popanga. Zachidziwikire, zida zomwe zimagwiritsidwa ntchito makamaka ndi phulusa la ntchentche, slag ndi zinyalala zina zolimba. Zinyalalazi zitha kugwiritsidwa ntchito bwino ndipo potsirizira pake kuzipanga njerwa zogwiritsidwa ntchito m'mafakitale. Zachidziwikire, kugwiritsa ntchito kwake kumafika 90%, ndipo mtengo wake ndi wotsika kwambiri. Panthawi imodzimodziyo, ntchito yopanga ndi yosavuta. Chifukwa chake, zida zazikulu zopangira njerwa zodziwikiratu zakopa chidwi kwambiri ku China, ndipo zili ndi zoteteza zachilengedwe. Zinyalala zosiyanasiyana zolimba zopangidwa ndi mafakitale ambiri zitha kugwiritsidwa ntchito popanga njerwa, ndipo njerwazi zitha kugwiritsidwa ntchito m'minda ina.

Masiku ano, zinthu zomwe zimagwiritsidwa ntchito m'magulu akuluakuluzida zamakina a njerwa zokhamakamaka zinyalala zomanga, zomwe zitha kupangidwa kukhala njerwa zomangira. Zachidziwikire, mumaphatikizanso njerwa zowotcha zopangidwa ndi phulusa la ntchentche ndi njerwa zopangidwa ndi zinyalala zambiri zaphokoso zapakhomo. Mwanjira imeneyi, imatha kuzindikira kubwezeredwa mobwerezabwereza kwa mitundu yonse ya zinyalala zolimba ndikuwongolera kwambiri kuchuluka kwa kagwiritsidwe ntchito. Chifukwa chake, ili ndi tanthauzo komanso gawo lalikulu pakuteteza chilengedwe. Pakadali pano, mafakitale ambiri omwe amagwiritsa ntchito zinyalala ku China amakonzanso ndikugwiritsiranso ntchito zinyalalazi ndikuzindikira malonda amsika.