
YUYAO JIEHUA POWER MACHINERY CO., LTD. manufactures small power diesel engines and derivative power units, backed by in-house casting, forging, machining, and assembly capabilities.
YUYAO JIEHUA POWER MACHINERY CO., LTD. (formerly Yuyao Power Machinery Plant) is a professional manufacturer of small power diesel engines, offering both air-cooled and water-cooled series along with derivative products across nearly 20 types.
The company operates full-process production lines covering casting, forging, machining, and general assembly. With complete equipment and advanced testing measures in place, it supports consistent manufacturing from core components through finished engines.
Its “Shuanghe” brand and “Diamond” diesel engines are designed for compact size, light weight, low fuel consumption, convenient operation, and reliable performance. These engines are widely used in applications such as water pump units, mini-type furrow complete machines, generators, boat propulsion, and assembled power solutions for agricultural and by-product processing.
The company runs its operations in line with the ISO 9001:2000 quality control system requirements. Products are sold across China and exported to markets including Europe, America, Southeast Asia, South Asia, Africa, and South America, with annual export volume stated as more than 100,000 sets.

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Testing measures support quality verification across key stages from component processing through final assembly.