Welcome to the world of Zhengrong precision machining.
With nearly 20 years of processing experience and are one of the oldest machining factories in China.

We specialize in the processing of precision, complex, special, small parts, and we have rich experience in CNC machining, lathing, milling,grinding, EDM, and wire cutting machining.

Especially in semiconductor testing equipment, medical equipment, automation equipment,electronic equipment, precision chemicals, aerospace, various machinery and other fields, it is widely used.

We enjoy a well-established reputation both domestically and internationally. And have established long-term friendly cooperative relationships with many customers in Japan, the United States, Europe, etc.

1. Small Batch & Single Piece Orders Welcome (MOQ=1 piece): We understand that your project needs may vary, and we're happy to accommodate single-piece orders or small batch runs.

2. Fast Lead Times: Get your parts quickly! Our lead times start at fast as 7 days, ensuring you receive your order efficiently.

3. Flexible Payment Options: We offer flexible payment terms with a 50% upfront deposit and the remaining balance due after successful quality inspection and your satisfaction.

4. Extended Warranty with 24-Hour Support: We stand behind our work. Our extended warranty provides peace of mind, and our dedicated team will offer solutions within 24 hours should any issues arise during the warranty period.

5. Uncompromising Quality Control: Every step of the production process undergoes rigorous inspection by our quality control department. Any parts not meeting our high standards are returned for rework, guaranteeing you receive top-quality products.

6. Documented Quality: We provide complete documentation for your parts, including raw material certificates, heat treatment reports, and detailed quality inspection reports.

7. Cost-Saving Expertise: With extensive experience, we can combine various processing techniques to optimize your project's costs while maintaining exceptional quality.

8. Secure and Professional Packaging: We employ professional packaging solutions tailored to the specific materials of your parts, ensuring they arrive safely and securely.

9. DDP trade terms : double customs clearance to door service, eliminating the customs clearance process and delivering the goods directly to you by express or air dispatch.

10. ISO Certificate

• CNC Machining (Universal Option): For a versatile solution that handles various materials and complex shapes, CNC machining is ideal. It offers a wide range of capabilities, making it suitable for intricate parts with tight tolerances.

• Turning (Efficient for Rotational Parts): If you need to batch produce rotationally symmetrical parts like shafts or bearings, turning excels in speed and efficiency. It's perfect for high-volume production of cylindrical components.

• Milling (Flexibility for Planes, Curves, and Irregular Shapes): Milling is a versatile choice for processing flat surfaces, curved geometries, and even irregular shapes. It offers excellent flexibility for parts with diverse features.

• Grinding (High-Precision Finishing): For exceptionally smooth finishes and tight tolerances, grinding is the go-to option. It's particularly suited for complex shapes that require high precision on critical surfaces.

• Wire EDM (Precision for Difficult Materials and Intricate Shapes): When dealing with challenging materials like hardened steel or intricate shapes not achievable with traditional tools, wire EDM comes into play. It utilizes a thin wire electrode to precisely cut conductive materials with minimal heat distortion.

Qingdao Zhengrong Precision Machinary Limited Company was established in February 2007, located in chengyang district, Qingdao city,Shandong Province,China.
The company has strict quality management in accordance with ISO9000.

We are good at processing parts of different materials, such as metal materials, stainless steel, steel, aluminum, iron, alloy, plastic, quartz glass,etc.

We are skilled in processing various difficult and complex parts, combining various processing techniques such as heat treatment, quenching, milling knurling,centerless grinding,wire cutting, milling, perforation, laser welding, grinding, cnc,wedm-ls,etc.

We are good at processing different parts, such as Bracket, Adapter, Shell, Flange, Timing Pulley, BLOCK,Bushing, Shaft Pin, Gear Shaft, Roller, Spur gear, Connector, Plate, Pipe Joint, Base, Baffle, Gasket/Shim, Rings, Insulated guide wheel, Guide pillar,etc.

The parts we process are widely used in semiconductor testing equipment, medical equipment, aerospace, hydrogen engines, automotive assembly lines, Steel Strip Packaging Machine, CCD Sorting Machine, boats, EMU, cameras, mobile phones, and more.

Our company has over 30 sets of processing equipments, including lathes, milling machines, grinders, wire cutting machines, CNC Machining Center, and other equipment. We also have a professional quality inspection department and various testing equipment to ensure that products are qualified before leaving the factory.

We specialize in precision, special, small parts processing and have more than 18 years of processing experience. We are warmly welcomed friends to visit our factory and online communication.

Q1: What kind of parts do you specialize in machining?

We excel at producing precise, small, special, and complex parts. Our expertise lies in creating intricate components that require tight tolerances and unique functionalities.

Q2: What processing technologies do you offer?

We possess a comprehensive suite of CNC machining capabilities, including 3-4 axis CNC machining, turning, milling, centerless grinding, surface grinding, cylindrical grinding, EDM (Electrical Discharge Machining), wire cutting, and laser cutting. This extensive range allows us to tackle a wide variety of projects with the most appropriate technique.

Q3: What tolerances can you guarantee?

We hold ourselves to the highest precision standards, guaranteeing tolerances down to +/- 0.001mm (1 micron or 1 micrometer). This ensures exceptional accuracy and functionality for your parts.

Q4: What is the typical lead time for production?

Our lead times are flexible and depend on the complexity of your project. Typically, we can complete production within 7-30 days.

Q5: Do you accept sample orders? And what is the sample lead time?

Absolutely! We understand the importance of sample verification before mass production. We offer sample orders with a quick turnaround time of approximately 7 days.

Q6: Do you provide inspection reports and material certificates?

Yes, we provide comprehensive documentation for your parts, including detailed inspection reports and material certificates. Additionally, we can offer heat treatment reports to ensure complete transparency and traceability.

Q7: How do you ensure quality?

We prioritize quality throughout the entire process. We have a dedicated in-house quality inspection department equipped with CMM (Coordinate Measuring Machine) testing capabilities. Furthermore, we support third-party testing to guarantee the highest quality standards for your project.