4314749 EX300LCH-2 EX300LCH-3 EX310H-3C EX310LCH-3C and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model Control Valve used for excavator hitachi

4314749 EX300H-3 EX300LC-2 EX300LC-3 EX300LC-3C and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model Control Valve used for excavator hitachi

4314749 EX300-2 EX300-3 EX300-3C EX300H-2 and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model Control Valve used for excavator hitachi