chemical etched cellphone keypad: 
1.Process:chemical etching 
2.Material:stainless steel,copper 
3.Thickness:0.03mm-1.00mm 

Specification

metal process methods for your choice:
1.Stamping
2.Chemical etching
3.Laser cutting

The secondary operation:
1.gold / silver / tin plated
2.electro-polishing
3.black painting

Thickness and tolerance

Metal Thickness Standard Tolerance
.002" - .005" ± .001"
.010" ± .002"
.015" ± .003"
.020" ± .0035"
.030" ± .0045"
.040" ± .005"
Unlike punch perforated sheets, photo etching produces burr and stress free meshes, resulting in greater efficiency and material integrity.

about us

1.Your inquiry related to our products or prices will be replied in 12 hours.
2.Well-trained and experienced staffs to answer all your enquires in fluent English
3.OEM&ODM,any your customized lighting we can help you to design and put into product.
4.Distributorship are offered for your unique design and some our current models.
5.Protection of your sales area,ideas of design and all your private information.

2.Tolerance we can achieve 
thickness below 0.2 mm, tolerance can be controled in +/-0.015mm
thickness below 0.5 mm, toleracne canbecontroled in+/-0.05 mm

  We professionally manufacture incremental rotary optical encoder for different specifications and materials including brass or copper, stainless steel, nickle, or other magnetic materials.

The products will be no residue or burr. If you are interested, welcome to send us drawings in PDF or Auto CAD.  

 More questions:

Customer:Are you factory?

Xinhaisen:Yes,we are a manufacturer factory.We are plant 3000 square meters,we have more than 100 employees in different departments.

Customer:How can I visit your factory or office?

Xinhaisen:Welcome you visit our factory or office for business negotiation.Please contact us first by email or telephone.We will make soonest appointment and arrangement the pick up.

Customer:Can you produce the goods as customer design?

Xinhaisen:Welcome you send us the design or sample,we will calculated the cost and unit price to you soonest.

Customer:May I get your sample for free ?

Xinhaisen:Yes,but freight fee should be born by you.

 1.If make sample according to your artwork,then need to pay for the

 sample charge.

 2.If just send sample card we made before time for you to test the quality,then sample for free.

Customer:How about the product packing?

Xinhaisen:Packing as ten different product and different size,we have professional export design packing for our customer,and we could as customer request.

Any requirements please don’t hesitate let me know.I will contact you at the first time.