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This is Arnold, Sales and technical engineer of Shandong hongrui company. I graduated from a famous university with a degree in internal combustion engines, I have been working for over 20 years, and have been engaged in engine testing (engine research and development, testing) for more than 10 years, and in main engine supporting technology (Cummins calls it an application engineer) for more than 10 years. If you have any technical problem, Such as engine select, parameters, power, speed and application etc, We can discuss online in your free time. Waiting for your message soon, We are ready to service to you around 24 hours.