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Call Us Today!
(310) 327-5740
Call Us Today!
(310) 327-5740

Call Us Today At ♦ (310) 327-5740

"For lasting satisfaction, quality has no substitute"

Welcome to our website…

Our Commitment

Sonic Plating is a professional metal finishing company with 50 years of experience. We specialize in serving military as well as the commercial industry for all their needs. We take great pride in providing a valuable service to our customers and welcome the chance to show you how the quality of our work can give you lasting satisfaction that has no substitute.

Quality Policy:

In order to keep our commitment we must start with solid quality standards. Our quality policy states that we shall strive to deliver products and services that meet or exceed its customer's requirements and expectations. The President and Quality Staff of Sonic Plating have established and authorized this policy which will be carried out at all levels of the organization. Management is committed to continuous improvements by:

  • Selecting qualified people and thorough appropriate training of its personnel
  • Creating an environment of quality consciousness
  • Proper maintenance and upgrading its equipment
  • Eliminating nonessential practices

Sonic Plating's Quality Control System meets the following requirements:

  • Quality Management System Compliance              AS9100D
  • In addition, the Quality System complies with         ISO 9001:15
  • Inspection system conforms to specification           ANSI/ASQ Z1.4-2003 (R2013)
               a. Quality inspection is required at all parts necessary to assure conformance to purchase contract requirements
  • Calibration is performed                    ANSI/NCSL Z540.3-2006 (R2013)

Contact information

Sonic Plating Company
Ryan Granath Owner / Operator

Tina Mc Vay / QA  Manager

Louie Gonzalez/ Shop Manager

1930 W Rosecrans Ave
Gardena, CA 90249


Fax: 310-327-6930

business hours

Monday through Friday:
7:30 a.m. to 4:00 p.m.


Business Associations

Member Metal Finishing Association of Southern California (M.F.A.S.C.)