Jinan Power Roller Equipment Co, Ltd. Na moetsi oa litsebi oa lisebelisoa tsa morao-rao tsa romela tsa romela tsa romela tsa romela le tlhahiso. E thehiloe ka 1998, k'hamphani ke motheo o ka sehloohong oa tlhahiso ea lisebelisoa tse ikhethileng tsa li-roller tse khethehileng Chaena. Lilemong tse 20 tse fetileng, k'hamphani ha e e-so behe matla ohle a eona ho R & D le tlhahiso ea lisebelisoa, empa hape a etsa lipatlisiso ka mokhoa oa tlhahiso o phethahetseng oa tlhahiso.
Lilemong tsa morao tjena, k'hamphani ea rona le eona e fana ka tlhahiso ea tlhophiso e bohlale ho indasteri ea Rull ea Rull ea Rull ea Ruler. Indasteri ea 40 Mokhoa o tla kenngoa ho tlhahiso ea roller ea rabara haufinyane haufinyane.