(1) Precision, hnav, yooj yim qauv, thiab yooj yim installation;
(2) Kev kub siab ntau yam, qee zaum ncav cuag 1000;
(3) Tsis tshua muaj suab nrov thiab kev ntseeg siab;
(4) Tsawg tus nqi tu thiab kho yooj yim;
(5) Tus kheej -lubricating muaj nuj nqi, kom ntseeg tau ntev -lub sij hawm durability;
(6) Rotary hom hydraulic twj ua rau nws yooj yim los tswj tus nqi ntws thiab siab piv;