You will find top diesel generator suppliers in China: Cummins, Perkins, Weichai, Yuchai, and Hiearns. You should look for factory ownership, industry experience, certifications, customization, and after-sales support. These leaders offer strong product ranges and reliable customer service. You can use these criteria to choose a diesel generator supplier. https://www.hiearns-power.com/new_detail/Top-5-diesel-generator-suppliers-in-China.html