Polishing & Finishing
Deburring, edge rounding, satin and mirror finishes
SURFACE TREATMENT
Surface Treatment Polishing · Coating / Anodizing · Laser Marking
We provide one-stop surface treatment solutions for precision metal parts, improving appearance, corrosion resistance, wear resistance, insulation and product traceability.
- Polishing & Deburring
- Coating / Anodizing Protection
- Laser Marking & Identification
3
Core Surface Processes
11
Polishing Machines
28
Coating & Anodizing-Related Machines
One-Stop
Polishing · Coating/Anodizing · Marking
01
SURFACE TREATMENT OVERVIEW
What Is Surface Treatment?
Surface treatment combines polishing, grinding, blasting, coating, anodizing and laser marking to improve the appearance and performance of precision parts. These processes enhance corrosion resistance, wear resistance, insulation, cleanliness and traceability. The appropriate process is selected according to the material, dimensional tolerances, appearance requirements and service environment.
Coating / Anodizing
Corrosion resistance, wear resistance, insulation and color
Laser Marking
Characters, logos, QR codes and traceability marks
PROCESS CAPABILITIES
Surface Treatment Processes
Our in-house capabilities cover polishing and finishing, coating and anodizing, and laser marking and printing for appearance, protection, functionality and traceability.
POLISHING & FINISHING
Polishing & Finishing
Vibratory, precision, high-speed rotary, plasma and robotic polishing improve burrs, edges, gloss and overall surface consistency.
Available Processes
- Vibratory finishing
- Precision polishing
- High-speed finishing
- Plasma polishing
- Robotic polishing
- Deburring
COATING & ANODIZING
Coating / Anodizing
Cleaning, masking, electrostatic dust removal, robotic spraying, curing and anodizing support cosmetic and functional requirements.
Available Processes
- Pretreatment
- Masking
- Dust removal
- Robotic spraying
- Drying and curing
- Anodizing
- Film inspection
- Visual inspection
LASER MARKING & PRINTING
Laser Marking & Printing
Laser marking, screen printing, pad printing, serial numbers, QR codes and batch marks support identification and traceability.
Available Processes
- Laser marking
- Screen printing
- Pad printing
- Serial numbers
- QR codes
- Batch traceability
EQUIPMENT & PRODUCTION LINES
Core Equipment & Production Lines
Our in-house equipment covers vibratory finishing, robotic polishing, precision finishing, automatic coating, anodizing and laser marking, with integrated process control and inspection.
VIBRATORY FINISHING
Vibratory Finishing Equipment
Continuous interaction between parts and finishing media supports batch deburring, edge rounding and surface equalization.
4 units
Vibratory machines
- Batch deburring
- Edge rounding
- Surface equalization
ROBOT POLISHING
Robotic Polishing Equipment
Controlled robot paths and multiple polishing tools provide repeatable finishing for complex curves and cosmetic surfaces.
2 units
Polishing robots
- Complex surfaces
- Path control
- Batch consistency
PRECISION & PLASMA FINISHING
Precision / Plasma Finishing
Precision, plasma and high-speed rotary finishing improve fine burrs, gloss and surface roughness.
1 + 6 units
Plasma / rotary machines
- Precision finishing
- Plasma finishing
- High-speed finishing
AUTOMATIC COATING
Automatic Coating Line
The coating line connects cleaning, masking, dust removal, robotic spraying, curing and visual inspection.
2 units
Coating robots
- Robotic spraying
- Continuous curing
- Film control
ANODIZING LINE
Anodizing Production Line
Automated transfer and process tanks support pretreatment, anodizing, cleaning, sealing and final inspection.
28 units
Anodizing equipment
- Automated transfer
- Anodizing and sealing
- Process inspection
LASER MARKING
Laser Marking Equipment
Laser workstations produce text, logos, serial numbers, QR codes and batch information for permanent identification.
4 units
Laser marking machines
- Logos and text
- Serial numbers
- QR codes
APPLICATIONS
Applicable Parts & Product Types
Our surface treatment capabilities support liquid cooling systems, robotics, optical transceivers, electronics and industrial parts with cosmetic, protective, functional and identification requirements.
AI LIQUID COOLING
AI Liquid Cooling Parts
Cold plates, flow-channel plates, covers and thermal structures requiring cosmetic and functional surfaces.
Precision finishing · Anodizing · Laser marking
HUMANOID ROBOT
Humanoid Robot Joints
Joint housings, mounting structures and actuator parts requiring controlled cosmetic surfaces.
Robotic polishing · Anodizing · Coating
OPTICAL TRANSCEIVER
Optical Transceiver Parts
High-density housings, heat spreaders and structural parts requiring protection and identification.
Precision finishing · Black anodizing · Laser marking
ALUMINUM ENCLOSURE
Aluminum Enclosures
Controller, instrument and electronic housings requiring color, protection and printed markings.
Color anodizing · Spray coating · Screen printing
ELECTRONIC STRUCTURE
Electronic Structures
Equipment frames, mounting bases and internal structures requiring protection and traceability.
Black anodizing · Protective coating · QR codes
MOLD & INDUSTRIAL PARTS
Mold & Industrial Parts
Molds, fixtures, locating bases and industrial components requiring deburring and finishing.
Deburring · Precision finishing · Laser marking
QUALITY & ENGINEERING CONTROLS
Critical Quality & Engineering Controls
Surface treatment quality depends on the base material, pretreatment, masking, fixture design, film thickness, color and post-treatment conditions. Critical requirements are controlled through engineering review, first-article approval and production inspection.
Engineering Control Priorities
Material & Pretreatment
Cleaning, degreasing, deburring and activation methods are selected according to material and appearance requirements.
- Material review
- Degreasing
- Pretreatment
Surface & Edge Condition
Burrs, roughness, gloss, texture, chamfers and edge rounding are controlled without excessive material removal.
- Roughness
- Gloss
- Edge condition
Film Thickness & Dimensions
The effect of coating growth on holes, slots, threads, sealing surfaces and assembly fits is evaluated.
- Film thickness
- Compensation
- Fit surfaces
Color & Appearance Consistency
Color samples, limit samples and first-article approval are used to control cosmetic consistency.
- Color difference
- Limit samples
- First article
Masking & Fixture Design
Masking and fixture plans protect functional surfaces, electrical contacts and untreated areas.
- Thread protection
- Contact points
- Datum surfaces
Performance & Traceability
Required performance is verified and process batches, inspection results and identification records are retained.
- Adhesion
- Corrosion resistance
- Traceability
Acceptance Criteria
Final acceptance criteria follow customer drawings, color samples, limit samples and technical specifications. Parts with critical cosmetic or performance requirements should be approved through samples and first articles before mass production.
PROCESS SELECTION GUIDE
Material & Surface Treatment Selection
Surface treatment should be selected according to the base material, appearance requirements, service environment, dimensional tolerances and identification needs. The following guide supports initial selection; the final process is determined through drawing review and sample validation.
Material–Process Compatibility Matrix
Different materials have different levels of compatibility with finishing, coating, anodizing and marking processes.
| Material | Polishing & Finishing | Coating | Anodizing | Marking / Printing |
|---|---|---|---|---|
Aluminum Alloys 6061 / 6063 / 7075, etc. | Recommended | Recommended | Recommended | Recommended |
Zinc Alloys Die-cast structural parts | Recommended | Recommended | Normally Unsuitable | Review Required |
Stainless Steel SUS303 / 304 / 316, etc. | Recommended | Review Required | Normally Unsuitable | Recommended |
Carbon Steel Mechanical and industrial parts | Review Required | Recommended | Normally Unsuitable | Recommended |
Engineering Plastics ABS / PC / PBT, etc. | Normally Unsuitable | Review Required | Normally Unsuitable | Review Required |
Results may vary with alloy grade, heat-treatment condition, casting defects and the original surface condition.
Select by Product Requirement
Appearance & Gloss
Improve texture, gloss, color and the overall cosmetic quality of the product.
- Precision finishing
- Robotic polishing
- Color anodizing
- Coating
Corrosion Protection
Improve protection in humid, salt-spray and general industrial environments.
- Anodizing
- Protective coating
- Sealing
Insulation & Function
Support insulation, protection and controlled conductive areas on precision parts.
- Anodizing
- Insulating coating
- Local masking
Color & Branding
Add product colors, logos, operating marks and brand identification.
- Color anodizing
- Coating
- Screen printing
- Pad printing
Dimension & Assembly
Protect holes, slots, threads, sealing surfaces and critical assembly fits.
- Film compensation
- Hole masking
- Thread protection
Permanent Traceability
Support product identification, production-batch management and quality traceability.
- Laser marking
- QR codes
- Serial numbers
- Batch codes
Selection Note
The final process should confirm material grade, original surface condition, critical dimensions, service environment, approved color samples and required performance testing. Sample validation and first-article approval are recommended for critical cosmetic or functional requirements.
RFQ REQUIREMENTS
Information Required for Quotation
Complete RFQ information supports a more accurate review of process feasibility, appearance standards, dimensional compensation, lead time and pricing.
2D Drawings
PDF / DWG
3D Models
STEP / IGES
Material & Condition
Grade / heat treatment / blank
Quantity & Phase
Prototype / pilot / production
Surface Specification
Process / color / gloss
Film & Dimensions
Thickness / tolerance / allowance
Masking Areas
Threads / seals / contacts
Cosmetic Criteria
Color / limit samples / surfaces
Inspection & Testing
Adhesion / salt spray / roughness
Packing & Traceability
Protection / batch / labels
ENGINEERING FAQ
Common Engineering Questions
01How should anodizing, coating and polishing be selected?
Anodizing is commonly selected for aluminum corrosion resistance, insulation and color. Coating supports a wider range of materials, colors and protective requirements. Polishing and finishing are used mainly for deburring, roughness, gloss and edge control. Final selection depends on the material, environment, appearance class and dimensional requirements.
02Will surface treatment change holes, threads and assembly fits?
Yes. Anodic films and coatings add thickness to treated surfaces. Critical holes, slots, threads, sealing surfaces and mating areas may require machining allowance, masking or post-treatment finishing. Compensation should be confirmed according to the selected process and target thickness.
03Why can color vary between batches using the same specification?
Material grade, heat-treatment condition, starting roughness, pretreatment, film thickness, bath condition and curing parameters can all affect color. Critical cosmetic parts should use approved color samples, limit samples and first-article approval.
04Can polishing affect dimensions and edge geometry?
Yes. Vibratory finishing, robotic polishing and precision finishing all remove material. Thin walls, sharp edges, sealing surfaces and critical fits require controlled time, media, pressure and polishing paths, together with clearly defined protected areas.
05How are laser marks and printed codes kept clear and traceable?
The material, treated surface, marking position, character size, contrast, QR-code grade and rub-resistance requirement must be confirmed. Samples should be approved before production, followed by visual or scanning verification.
