1) Engines: Only choose high quality engines with excellent quality parts like P type injectors, Bosch fuel pump etc
2) Alternators: Only choose 100% copper wires alternator, with China top brand breakers & AVR.
3) High quality parts like Schneider breaker, Omron relay, ComAp controller etc.
4) Professional 8 Hours test on 25%, 50%,75%, 100%, 110% load before delivery