... type:3PH star, 3PH-DELTA4. Filter system: oil, fuel and air filter5. Accessories: exhaust elbow, bellow, muffler service quality assurance1)Before-sale Service ... product technical parameters for equipment choosing and system designing2)Service quality assurance:our sale staffs are all experience ... for end user and provide them follow-up service,regular return visit and permanent maintenance.4)Spare ...