1. Yijiang ụlọ ọrụ pụrụ iche na mmepụta nke Morooka rollers maka 18 afọ. Emepụtara rollesr ka ọ bụrụ ụkpụrụ kachasị elu;
2. Anyị nwere ike inye Morooka chassis akụkụ, gụnyere track ala ala ala, n'ihu idler, sprocket, .top roller na roba / ígwè track;
3. Ngwaahịa anyị na-ebupụ na Europe na USA, na ndị ahịa aghọtawo àgwà ahụ nke ọma