NINGXIA DONGJING MACHINE TOOL CO., LTD. develops and manufactures engine rebuilding and maintenance equipment, including air-float centering valve seat boring machines. Its patented technology is positioned at the leading edge in China.
NINGXIA DONGJING MACHINE TOOL CO., LTD. is dedicated to the research and manufacture of equipment for engine rebuilding and maintenance, serving the vehicle repair and remanufacturing sector.
The company has designed and produced an air-float centering valve seat boring machine since 2004. The related technology has obtained four national patents and holds a leading position in China, helping reduce reliance on imported equipment and advancing high-precision cylinder head rebuilding and repair.
Focused on precision, efficiency, and practical cost performance, Dongjing’s solutions are built to support high-accuracy repair processes while improving workshop productivity. Its products are well received by domestic and international customers for their quality and value.

NINGXIA DONGJING MACHINE TOOL CO., LTD. is dedicated to the research and manufacture of equipment for engine rebuilding and maintenance, supporting professional vehicle repair and remanufacturing applications.
The equipment is developed to support high-precision repair technology while improving efficiency and overall workshop benefit, helping raise productivity in engine rebuilding operations.
The products are well received by domestic and international customers for high quality and cost-effective performance.
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