5–100+ μm
Oxide Layer Thickness
Type II & Type III
400–600 HV
Hardcoat Hardness
Wear-resistant finish
RoHS / REACH
Environmental Compliance
EU & US market ready
100%
Quality Inspection
Before dispatch
Technology
Two Core Anodizing Processes
Type II
Decorative Anodizing
Decorative & Color Anodizing
The porous oxide layer absorbs dye for consistent color across large production batches. It provides a refined finish for export products.
5 – 25 μm
Thickness
200–300 HV
Hardness
Wide color rang
Color
Applications
Electronic enclosures
Premium heat sinks
Aluminum furniture
Automotive trim
Type III
Hard Anodizing (Hardcoat)
Hard Anodizing
Low temperatures and high current density produce a thick, hard oxide layer with excellent wear resistance, scratch resistance, and electrical insulation.
25 – 100+ μm
Thickness
400–600 HV
Hardness
Dark gray / Black
Color
Applications
EV components
Industrial machine parts
Hydraulic equipment
Aerospace components
Color Options
Anodized Color Options
Consistent color across production batches. Physical samples are available upon request.
* Colors shown are for reference only. Physical samples are available upon request.
Process
Our Integrated Surface Treatment Process
01
Mechanical Finishing
Shot blasting or sandblasting creates a refined matte texture; mirror polishing is available on request.
04
Color Dyeing
The porous oxide layer absorbs specialized dyes. Immersion time is controlled for consistent color across the batch.
02
Degreasing & Cleaning
Alkaline cleaning removes oil and surface contaminants to prepare parts for a uniform anodized layer.
05
Sealing
Hot-water or chemical sealing closes the pores, improving color retention and corrosion resistance.
03
Electrochemical Anodizing
Parts are immersed in a sulfuric acid bath. Current density and temperature are controlled to achieve the specified oxide thickness.
06
QC & Delivery
Coating thickness is measured using eddy-current testing; color and adhesion are checked before export packing.
Request a Competitive Quote Today
Need anodizing for aluminum parts or extruded profiles? Discuss the alloy, appearance and functional requirements with ONTOPS.
Send drawings, quantities, coating specification, color reference, masking details and test requirements for review.
ISO 14001 Certified
IATF 16949 Certified
