Chongqing SUJEXA Power Technology Co., Ltd.

Precision Manufacturing Powering the Future

OEM / ODM customization service
Professional automotive cylinder head manufacturing solutions

We focus on the R&D and manufacturing of automobile engine cylinder heads, with casting, precision machining, quality inspection and mass production capabilities.

Based on customer needs, we provide one-stop OEM/ODM services from product development, sample verification to mass production, helping global customers create high-quality, high-reliability automotive cylinder head products.

Locating hole machining: Machining datum locating holes to establish the reference for all subsequent operations;
Intake and exhaust face drilling: Machining the corresponding mounting holes on the intake and exhaust faces of the cylinder head;
End face drilling: Drilling operations on both end faces of the cylinder head;
Valve seat insert and valve guide pre-hole machining: Precision machining the pilot holes for the valve seat inserts and valve guides;
Press-fitting valve seat inserts and valve guides: Press-fitting the inserts and guides into the prepared holes for assembly;
Guide hole and oil passage machining: Machining the valve guide holes and oil passages;
Camshaft bore boring: Precision machining the bearing bores for the camshaft;
Aluminum chip cleaning and blow-off: Blowing out internal aluminum chips and cleaning the workpiece;
Airtightness testing and endoscopic inspection: Testing valve sealing integrity and using an endoscope to check for internal aluminum chips, burrs, or defects;
Final inspection, packaging, and warehousing: Packaging the finished product after passing full inspection and placing it into storage.

The company attaches great importance to technological innovation and the development of intellectual property. It currently holds 15 valid intellectual property rights related to its core products—all of which are invention patents—thereby establishing capabilities for independent R&D and product innovation. This provides robust support for the company to continuously improve product quality, optimize manufacturing processes, and enhance its market competitiveness.