There are many manufacturers and suppliers of aquarium pumps in China, and the following are some of them:

Zhongshan Haiyi Electrical Appliance Co., Ltd.: Focused on the research and development, production, and sales of aquatic equipment, including water pumps, air pumps, heating rods, lighting fixtures, filter materials, etc.

Zhejiang Jialu Aquatic Products Co., Ltd.: The company's main products include aquatic equipment, fish tanks, accessories, etc., and has a complete and scientific quality management system.

Zhongshan Xianglong Electric Appliance Co., Ltd.: The company focuses on the research and development, production, and sales of aquatic equipment, including water pumps, air pumps, heating rods, lighting fixtures, filter materials, etc.

Guangzhou Haibin Aquarium Equipment Co., Ltd.: The company mainly produces various aquarium boxes and supporting equipment, including aquarium pumps, aquarium filters, aquarium lamps, etc.

The submersible pumps produced by these companies have received recognition and praise from the industry and customers. I hope this information can help you. If you need more detailed information, please obtain it through search engines or consult professionals.