FOEN J168 Sistemụ ọnụ ụzọ sliding na-enye ihe ngwọta zuru oke maka ụlọ ahụ; A na-emechi eriri roba atọ, na eriri roba etiti na-enye egwuregwu zuru oke na-arụ ọrụ nke ụkpụrụ mkpuchi mmiri ozuzo, nke mere na ngwaahịa ahụ nwere ezigbo ikuku na mmiri siri ike. nwere ike na-aghọta oghere nke nnukwu nkebi, mfe izute mkpa nke a dịgasị iche iche nke ụlọ; The ewepụghị imewe nke n'èzí etiti Fans na-emekwa ka ụlọ ọdịdị ọzọ mfe na mara mma, adabara n'etiti na elu-ọgwụgwụ oru ngo.