STANDARD (AS-MILLED)-The finish option with the quickest turnaround. Sharp edges and burrs would be removed by default.
(If you need parts with sharp edges and burrs,please remark below or note on 2D drawing).
Surface finish is comparable to 125 uin Ra finish.

ANODIZED./1.BEAD BLAST + ANDODIZED COLOR  / 2.ANODIZED /3.ELECTRICALLY COUNDUCTIVE OXIDATION- Anodizing creates a corrosion-resistant finish. Parts can be anodized in different colors—clear, black, red, and gold are most common—and is usually associated with aluminum. And with bead blast, the part surface is left with a smooth, matte appearance.(Note: 1.There will be a certain color difference between the actual color after anodizing and the above color board. 2.Rack marks are inherent to the anodizing process. When engineering a part that will be anodized, you'd better identify where the part will be racked. Typically, the racking location is chosen to minimize the visibility of the mark after the part is assembled.)

BRUSHED - Brushing is a surface treatment process in which abrasive belts are used to draw traces on the surface of a material, usually for aesthetic purposes. The thickness of the abrasive belts (usually between #80-120) affects the finish. Although suitable for a handful of metals, brushing is most commonly applied to aluminum.

BEAD BLAST- The part surface is left with a smooth, matte appearance. 

SPRAY PAINTING/1.SPRAY PAINTING – MATT PAINT/2.SPRAY PAINTING-HIGH GLOSS PAINT-Spray painting: Using spray guns with air pressure to disperse into uniform and fine droplets and apply the painting to the surface of the object. Application: generally used in the appearance of smart hardware, home appliances, and plastic parts. 

POWDER COAT /1.POWDER COAT-MATT /2.POWDER COAT-HIGHT GLOSS - This is a process where powdered paint is sprayed onto a part that is then baked in an oven. This creates a strong, wear- and corrosion-resistant layer that is more durable than standard painting methods. A wide variety of colors are available to create the desired aesthetic.

SPRAY –PLATING/ 1.CHROME PLATING / 2. GALVANIZATION / 3.NICKEL PLAING / 4.SLIVER PLATING / 5.GOLD PLATING / 6. TIN PLATING-Chrome plating is a technique of electroplating a thin layer of chromium onto a metal object. The after product of chrome plating is called chrome. The chromed layer can be decorative, provide corrosion resistance, ease cleaning procedures, or increase surface hardness. Sometimes, a less expensive imitator of chrome may be used for aesthetic purposes. 

DETAIL SANDING/#1000 SANDING - Sanding is the use of fine abrasive sand particles to rub the surface of the product to produce a diffuse, non-linear texture effect. Adhere different abrasive grit to the backing paper or the back of the board, and the abrasive grit can be distinguished by different granularities according to the size: the higher the particle size, the finer the abrasive grit, so the surface effect is better.

SMOOTH MACHINING/ SMOOTH MACHINING- (Ra1.6 μm,63μin)- A finishing CNC machining operation can be applied to the part to reduce its surface roughness. The standard smoothing surface roughness (Ra) is 1.6 μm (63 μin). This can be decreased down to 0.4 μm (15.7 μin) upon request and on a case-by-case basis. Machine marks are less evident but still visible. 

CHEM TREATMENT/1.CHEMICAL CONVERSION COAT(CHEM FILM/ 2. ELECTROPHORESIS/ 3.ETCHING - Non-chromic chemical conversion coating provides corrosion resistance and good conductivity properties. Adds very little thickness, about 0.00001”-0.00004”. Chem film will conform to MIL-DTL-5541, TYPE II.  It contains no hexavalent chromium, a substance which became regulated under RoHS directive in Europe and so forth as an environmentally hazardous substance.

PHYSICAL TREATMENT /1.ELECTROPOLISHED(Ra0.8 μm,32μin) / 2.PVD(PHYSICAL VAPOR DEPOSITION) / 3.PICKLING - An electrochemical process cleans steel parts to reduce corrosion and improve appearance, by making the metal brighter. Removes about 0.0001”-0.0025” of the metal. Conforms to ASTM B912-02.

OTHERS- When the surface finish you need is not listed above, or you have special requirements for the surface treatment of the part, please describe it clearly below.