RSP, Inc
RSP, Inc

Custom Assembly and Plastic Injection Molding

RSP, Inc. specializes in turn-key production with over 50 years experience in manufacturing, assembly, logistics, and customer service. We are headquartered in Milwaukee, WI and control & operate two ISO certified facilities in China. Between our three facilities we have over 80,000 square feet of manufacturing space! We also have project teams both domestically and overseas ensuring 24/7 support throughout all phases of your project.


We work with all types of companies including small startups utilizing Kickstarter to Fortune 500 companies like GE, Siemens and Ford, and everything in between. No order, project, or company is too small or too large for us.


We specialize in the following categories but have experience with almost all types of manufacturing processes and materials:

  • Membrane Switches
  • Graphic Overlays and Labels
  • Plastic Molding
  • Silicone Molding
  • Turnkey Manufacturing
  • Turnkey Assembly
  • Wire Harnesses
  • Metal Fabrication
  • Printed Circuit Boards (PCBs)


Check out our website today at to see how we can turn your idea into reality.

Custom Manufacturing Services


  • Rubber Molding
  • High Pressure Hoses
  • Wire Harnesses
  • Membrane Switches
  • Medical - Automotive - Consumer - Industrial - Electrical


  • Medical / Healthcare
  • Automotive
  • Military
  • ISO 9001 :2008
  • Consumer & Educational Products
Overall Rating Averages    (Total Ratings Received: 3 , Unique Customers: 3)

RSP, Inc RSP, Inc
Reviews Project Rating Quality Responsiveness Delivery
  • #926121
  • 2017-10-02
RSP was excellent to work with. Will definitely work with them again on future projects.
Steven P.
  • #913188
  • 2017-01-31
RSP was absolutely great to work with. Matt was exceptional in understanding our quality needs, and worked well at getting us the exact part and finish we were looking for. I highly recommend RSP!
Jeff H.
  • #636452
  • 2012-05-30
Throughout our first engagement, RSP has looked out for the best interests of our project and provided us with top-notch customer support. They own both onshore (US) and offsore facilities, so their pricing is competitive. RSP stands by the quality of their work, takes ownership of problems when they come up, and acts as a true partner in ensuring the success of projects. We've already started a second project together and are looking forward to many more!
Benjamin M.
  • Brookfield, Wisconsin
  • USA 53005