RE: CONFIDENTIALITY REQUEST FOR

To Whom It May Concern:

This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the

• Block Diagram
• Schematics
• Operational Description

required to be submitted with this application be permanently withheld from public review.

The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors.

Please contact me if there is any information you may need.

Sincerely,

[Signature]

Client's name / title : Harry Wang / Manager

Contact information / address: 201-7, Building 2, Shihua Lixing Fengda Industrial Factory, No. 49 Wuhe Avenue South, Wuhe Community, Bantian Street, Longgang District, Shenzhen, China