RPM Plastic Molding Inc. was originally founded in 1983 by toolmakers as a tooling house designing and building all classes of injection molds. As its size and reputation for premier mold making grew, so did its customers’ needs which drove the decision to widen its service solutions. In the early 1990s, RPM expanded its services to include every aspect of custom injection molding…product design, tool engineering, insert molding, finishing and assembly.

Today, RPM remains committed to its core belief…customer service first. From your first phone call, RPM representatives focus on personal attention to customer needs upholding RPM’s reputation for quality, service and value.

Now a complete plastic injection molding company with its own in-house tooling, RPM prides itself on superb customer service providing quality products that meet or exceed all customer requirements with honesty and integrity.

At RPM, quality is designed into the mold and product, not inspected in later. This means reliable tool performance and consistent molding results over the life of the tool.

“We work very closely with our customers,” says Phil Hothan, “developing their products. We’ve had customers come to us because their mold is not working correctly. They’ve been to many other mold houses, and they’re still not right. Poorly engineered and built molds cost everyone time and money, and sacrifice quality. So we re-develop the tools for them and do it right! Long term it saves us all time and money, and is the basis for a long-lasting relationship. Piece price goes down, product quality goes up…it’s a win-win situation


With consistent product quality and on-time delivery, short runs to long runs…all plastic molding services are performed with the same professional attitude and customer care RPM customers have come to expect. RPM proudly serves healthcare, sporting goods, electronics, automotive and consumer products industries in Southern California and throughout the United States.