Diesel generators are a commonly used power generation equipment that can meet the power needs of many occasions. If you need to rent a diesel generator, you can inquire at local equipment rental companies or electromechanical equipment dealers. Below are some possible rental companies or dealers:

1. Equipment and Machinery Distributors: These companies typically sell a variety of equipment, including diesel generators. They offer equipment rental services and provide detailed user manuals and maintenance advice. You can find such companies in local business districts or at construction equipment exhibitions.

2. Equipment Rental Company: These companies specialize in providing equipment rental services, offering a variety of diesel generators in different types and capacities to meet your needs. They usually have professional rental teams and equipment management systems to ensure safe operation and maintenance of the equipment. You can search for such companies online, or contact them via phone or email.

3. Diesel Generator Manufacturer: Some manufacturers also offer leasing services, providing you with a variety of models and capacities of diesel generators. These companies typically provide after-sales service and technical support to ensure the stability and reliability of the equipment during use. For more information, visit their official website, or contact their customer service department.

In summary, you can find diesel generator rental services through the aforementioned channels, select a rental company or manufacturer that suits your needs, and contact them for more information. Before renting, be sure to carefully read the equipment's user manual and maintenance guide to ensure proper use and maintenance of the equipment, in order to avoid unnecessary risks and losses.