· Much more convenient maintenance operation, durable oil and filters to reach longer maintenance period and 50% less expense.

· The longest designed lifetime can reach 25000 hours, 30% longer lifetime compared with previous models.

· Adopt optimized engine, pump and valve matching technology to improve energy transfer efficiency; Lower fuel consumption and higher efficiency.

· Through experience accumulation of 15 years, the operating life is more than 15,000H under mining working condition.