Mankhwala owopsa ndi thupi la zakumwa zoyaka zimapangidwa ndi zoopsa zingapo.Kuti muchepetse zoopsa zomwe zimakhudzana ndi zakumwa zoyaka, titha kusunga zakumwa zonse zoyaka mu nduna yosungirako. Makanda otetezera a Yunbosos ndioyenera kuteteza zakumwa zoyaka, miseche, mankhwala ophera tizilombo komanso zinthu zina zowopsa.

Kukhala kutentha ndi chinyezi chowongolera njira, yunboshi imapereka zouma makabati, komanso zogulitsa za khunyu, makabati amakasitomala padziko lonse lapansi. Maukadaulo a Yunboshi amayang'ana pakufufuza ndi kukula kwa matekinolojeni olamulira amtundu umodzi m'misika yambiri mu mankhwala, pakompyuta, semiconductor ndi ma CD. Tidakhala tikugwira ntchito makasitomala ochokera kumayiko 64 monga rochester - USA ndi Good-India kudutsa zaka.