Yongjin - Makina apamwamba kwambiri a nsalu, makina owonetsera nsalu, makina ogwiritsidwa ntchito ndi nsalu yoluka YJ-NF 4/66
Timapereka makina apamwamba kwambiri a nsalu, makina opangidwa ndi zinthu zooneka ngati zoyera, makina opangidwa ndi nsalu zakale ndi nsalu yoluka yomwe imapirira zosowa zaposachedwa zamafakitale komanso imakwaniritsa miyezo yapamwamba kwambiri komanso yotetezeka kuti zitsimikizire kuti chithandizocho chikugwira ntchito nthawi yayitali, kulimba komanso kugwira ntchito bwino. Izi zimagwiritsidwa ntchito popanga zinthu tsiku ndi tsiku komanso kupanga ndipo ndizofunikira kwambiri m'mafakitale onse.