Peb lub tuam txhab muaj ib pawg tshiab ntawm FKM ODU. Ordinary hydraulic seals feem ntau yog ua los ntawm PU. Qhov no hydraulic foob yog ua los ntawm FKM. Ib yam li ntawd, peb tuaj yeem ua lwm yam khoom siv. Ntev npaum li koj xav tau, peb tuaj yeem ua tau. Yog tias koj xav tau, thov hu rau peb.
