What can we provide for you?
- MOLD MANUFACTURE
- EXTRUSION
- CNC MACHINING
- ANODIZING
- POWDER COATING
- SPRAY PAINTING
- SANDBLASTING
- POLISHING
- BRUSHING
- SCREEN PRINTING
- LASER ENGRAVING
- BENDING
- WELDING
- STAMPING
- ALUMINUM EXTRUSION
- ALUMINUM CNC MACHINING
- ANODIZING
- POWDER COATING
- OTHER SERVICES
A Trusted Manufacturer of Custom Aluminum Extrusion CNC
Zheng Ji specializes in custom aluminum extrusion solutions.There are 12 extrusion lines, 30 CNC processing equipment, 5 anodizing and 3 powder coating workshops in Zheng Ji’s park. We start by reviewing your drawings to assess the feasibility and complexity of mold design and extrusion. Our experienced engineers evaluate how specific processes may affect surface quality or product functionality, and can recommend suitable surface treatments when needed. Every production step is closely monitored to ensure consistent quality and reliable results. Contact us to learn more.
Our Services
Our Production Lines











Aluminum Product Gallery
Zheng Ji has custom-manufactured aluminum profiles for a wide range of clients, tailored to suit diverse application scenarios. View our extensive gallery of precision machined prototypes and parts from our valued customers. Contact us. Request for quote.
T-slotted Profile, Square Tube with Flange, Aluminum Z Profiles, Aluminum Tees, L Profiles, Channel Profiles, Beams
Enclosures for Electronic Devices, Large Lighting Fixtures, CNC Processing Cases, Custom Aluminum Enclosures
Round, Square or Flat Radiator, Customized Aluminum Heat Sinks, Heat Dissipation Fin, Thermal Module
Surface LED Profile, Round Light Profile, Recessed LED Profile- PC, end cap and clips available
Aluminum Sliding Lock Handle, Edge Handle, Gola Handle, G Profile Handle, Rnob Handle, Customized Handle
Aluminum Door & Window Fram Profiles, Cabinet Frame with Handle, Curtain Frame, Custom Aluminum Frame
Light Strip Aluminum Skirting Board, Simplicity, Snap-on, Base Aluminum Skirting Board
Mold Making, Custom Extrusion, CNC machining, Anodizing, Powder Coating, Welding, Stamping
Why You Can Trust Zheng Ji Aluminum
We strictly adhere to ISO quality standards and have been certified to ISO 9001: 2015. Our production lines use advanced technology to ensure manufacturing precision and accuracy. With in-house advanced measuring and testing equipments, we can verify that all materials and products meet your specifications.
Instant Quoting
If your RFQ contains clear information, quotations are typically delivered in a few hours.
Full Service
Our own industrial park includes extrusion, CNC, surface treatment and other production lines, can provide all processing needs for aluminum product processing and production.
Industry Experience
Having carried out rapid prototyping and rapid manufacturing since 2004, our engineers have built up rich experience. We can handle all types of projects.
30K+ Projects Delivered
Over 10K projects have been sent to our customers worldwide since we started in 2004, and we have received countless positive comments.
Put your parts into production today
Put your parts into production today
Scale your production with ZhengJi’s vast network. Enjoy various manufacturing processes, flexible order volumes, and expert engineers. From prototyping to custom part production, we deliver quality at a reasonable price.
Over the past 20 years, we’ve earned multiple ISO certifications demonstrating our quality capabilities. We guarantee timely and reliable prototyping and production services.
- Factory park covering an area of 70,000 square meters
- Timely and affordable pricing solutions
- Comprehensive processing options
- Customized delivery timelines







