Ndi zaka zoposa 30 za mbiriyakale,Ningbo jialiadayesa kuyambitsa ambirizinthu zachilengedwezomwe zimathandiza kuchepetsa kuwononga chilengedwe.Ndi kudzipereka kwakukulu pakusamalira nkhani za chilengedwe zomwe zimadza chifukwa cha zinyalala za tsiku ndi tsiku, makampani ambiri apanga burashi ya mano yogwirizana ndi chilengedwe yomwe imawola mwachilengedwe (mwachilengedwe imasanduka feteleza pakapita nthawi) osaipitsa nthaka.Mankhwalawa amadziwika bwino chifukwa cha zotsatira zake zabwino zopondereza mankhwala oopsa osiyanasiyana komanso mahomoni achilengedwe.

Kutengera zaka zambiri zoyeserera za R&D, lumo la Ningbo jiali limatha kupanga zinthu zosiyanasiyana zatsiku ndi tsiku ndi zinthu zotayidwa zomwe zimapangidwa ndi zinthu zoteteza chilengedwe.

Lumo limeneli limapangidwa ndi utomoni wowola mwachilengedwe.Ndi chogwirira chalumo chopanda kuipitsidwa chomwe sichipanga mankhwala aliwonse kapena mahomoni achilengedwe (dioxin).Ikatayidwa, siiwononga nthaka koma imasandutsidwa feteleza mwachangu kwambiri.

Razor yotha kuwononga zachilengedwe: Lumo limeneli limapangidwa ndi utomoni wowola.Ndi lezala lopanda kuwononga chilengedwe lomwe silitulutsa mankhwala aliwonse kapena mahomoni achilengedwe (dioxin). Ikatayidwa, siyiipitsa nthaka koma imasinthidwa kukhala feteleza mwachangu kwambiri.

Ndi njira yatsopano yotayira ya malezala.Monga nzika zapadziko lonse lapansi, tonsefe tiyenera kuchita mbali yathu kuteteza dziko lapansi.