Surface Finish

We are prepared to offer full range of finishing service, from painting to printing, polishing to plating, blasting to anodizing, to achieve the perfect finishing as customer designed and expected.

We are experts in achieving the perfect finish for your prototype or manufactured part. With painting, printing, vapor polishing, sanding, anodizing and many other services to choose from, you can create the exact look you want.

·        Anodizing

·        Painting

·        Color Matching

·        Pad Printing

·        Sanding and Polishing

·        Polishing and Texture

·        Vapor Polishing

·        Blasting

·        Powder Coating

Anodizing (CNC and Die Casting parts)

Anodizing is an electrochemical technique for changing the surface properties of some metals. We are able to anodize aluminum parts. For aluminum CNC parts, there is no color limitation, but for aluminum die casting parts, It is difficult to apply anodizing to die casting grades of aluminum, due to the high Si content, it does not typically adhere to the parts. The hard black anodizing we can provide for aluminum die casting parts is only for corrosion resistance and is not for cosmetic appearances. 

There are many reasons to choose an anodized surface treatment. It improves corrosion protection, surface hardness, wear resistance, aesthetic appearance and the adhesion of paints and primers. It also reduces electrical conductivity, helps to dissipate heat and reduces surface reflection.

We use primarily Type II anodizing, which allows the surface to accept colorants and dyes. Type II is also ideal as a base for painting, which further increases corrosion protection.

Painting (CNC, Die Casting and injection plastic parts)

We have environment controlled paint room with automated driers allowing us to apply most types of commercially-available paints for your prototypes or low-volume manufactured parts.

Our technicians are able to produce any desired surface finish, including high gloss, matte, semi-gloss, soft touch painting, metallic flakes and customized textures.

Color Matching (CNC and injection plastic parts)

We understand very well that the color of your finished product can be as important as its function. Customers would specify Pantone colors/RAL colors, these colors are notoriously difficult to match with molded plastic parts because the color can vary greatly dependent on part geometry, type and thickness of the molded plastic. When exact Pantone matches are not available, we strongly recommend providing a physical sample for our professionals to use in creating custom colors. Also, we could do color-matched tinting for clear plastic parts.

PANTONE and other Pantone trademarks are the property of Pantone LLC.  PANTONE color identification is solely for artistic purposes and not intended to be used for specification.

For injection molding parts, customer could provide us a Pantone/RAL color code or color sample for us to do color match.

For low production volumes, we could do the color match by adding the color pigment/colorant, but parts from different batches will occur slight color variations (within 1.5 Delta E) due to the procedure of mixing pigmenting powder/colorant and granulates.

For high production volumes, we could order pre-color material or add color concentrate to ensure color consistency for parts order (MOQ 1 ton for material is required), color consistency will not be a problem. If color consistency is required, we would normally update the quote with pre-color material/adding color concentrate.

For metallic color, it will required to add the silver/golden powder in the material, however it will not be good for cosmetic surface, we would recommend to run the parts in natural color and then apply the painting or plating.

Pad Printing (CNC, Die Casting and injection plastic parts)

We apply pad printing in custom colors, and CNC manufacture customized aluminum stencils which are suitable for any flat or semi-curved surface. Silk-screening is also available which may be more suitable for some applications.

Sanding and Polishing (CNC and Die Casting parts)

Wet and dry sanding is often used to prepare a surface for painting, but it can also create unique surface textures which are an integral part of the final design.

We can achieve highly finished surfaces up to mirror polish, suitable for stainless steel, aluminum and PMMA type plastics. Semi-gloss and matte surface textures are created by using less fine abrasives applied in a random, non-directional fashion.

Standard brush finishes are created by progressive sanding in one direction only, we can customize to any effect desired.

Polishing and Texture finish on mold (plastic injection parts)

Surface finish on the tools is no limited. We could achieve different finish per SPI finish grades, VDI finish grades, Mold Tech Texture finish for molds. Moreover, we could apply painting, printing to the injection plastic parts. Below is some finish customer usually used for their parts.

High gloss finishes: A1, A2, A3, plastic mirrors, visors and other optical plastic goods.

Semi-gloss finishes: B1, B2, B3, better finish for demolding, semi-gloss finishes with some sheen.

Low gloss finish: C1, C2, C3, mute finish on molded part, no sheen, for non-cosmetic parts.

Matte finishes: D1, D2, D3, sandblasted the mold to gain decorative, non-reflective finishes on parts.

Equivalent textures are available and often provide excellent comparison to the actual Mold-Tech textures and SPI standards, while saving significant cost and mold build time. Use of an equivalent texture should be determined and decided by the customer. There is no limit for the texture, but minimal draft will be required for demolding, to get rid of scratch marks when demolding. Below list the MT texture our customer normally used.

Texture Number Min. Draft Required

       11000           1.5 

       11010           2.0 

       11020           3.0 

       11030           3.5 

       11050           7.0 

       11100           9.5 

Vapor Polishing (CNC-clear PC parts)

This is a specialized treatment we do in-house for achieving optical clarity on polycarbonate (PC) plastic. This method can also be used for repairing minor surface defects, and is ideal for achieving an extremely clear surface on complex geometries or hard to reach areas.

After carefully preparing the part with sanding up to #1500 grit, it is then placed in controlled environment, using the gas to melt the surface of the plastic at the molecular level, which rapidly reforms with all microscopic scratches blended out.

Blasting (CNC and die casting parts)

This surface texturing method involves placing a part inside of a chamber where the surface is then impacted with various abrasive media under pressure.

The abrasive material we use includes sand, garnet, walnut shells, and high-pressure water, though virtually any other media can be had on request.

The choice of which media to use on your part depends on the desired surface texturing effect, the raw material of the product, and the dimensional tolerances required of the finished piece among other considerations. 

Powder Coating (CNC, sheet metal parts and metal casting parts)

Powder coating is a type of coating that is applied as a free-flowing, dry powder. The main difference between a conventional liquid paint and a powder coating is that the powder coating does not require a solvent to keep the binder and filler parts in a liquid suspension form. The coating is typically applied electrostatically and is then cured under heat to allow it to flow and form a "skin". The powder may be a thermoplastic or a thermoset polymer. It is usually used to create a hard finish that is tougher than conventional paint. Powder coating is mainly used for coating of metals, such as household appliances, aluminum extrusions, drum hardware and automobile and bicycle parts.

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