From a new product concept to an existing molding program, we help you address manufacturing challenges and build a dependable path to production.
U.S. Engineering Support.
Nearshore Manufacturing.
Custom Plastic InjectionMolding & Assembly
Capabilities
From Part Design to Production and Delivery
Coordinate your molding program with a partner that supports design, tooling, manufacturing and fulfillment. Mission Plastics brings these capabilities together to help you manage part quality, production requirements and delivery.

Injection Molding & Assembly
Produce custom plastic components with precision injection molding, insert molding, overmolding and automated assembly. Our manufacturing team supports complex parts and value-added operations.

Quality & Validation
Support your program’s quality requirements with metrology, in-line inspection, process capability studies and validation services, including IQ, OQ, PQ and PPAP support.

Project Onboarding & Program Management
Align engineering, tooling, scheduling and customer communication from the beginning. Structured onboarding helps your team plan the steps needed for a production launch.

Engineering & Design for Manufacturability
Identify potential production challenges early with Design for Manufacturability (DFM), material selection assistance and mold design support. Refine your part design with manufacturing requirements in mind.

Tooling & Prototyping
Move from concept to production with mold development, rapid prototyping and tooling support. In-house mold maintenance and repair help address wear, performance issues and production interruptions.

Packaging, Fulfillment & Logistics
Coordinate packaging, kitting, inventory management and shipping with your production program. Connected fulfillment support helps reduce the complexity of managing separate suppliers.

Facilities & Equipment
Match your project requirements with our molding, cleanroom, automation and inspection capabilities. Explore the resources supporting your program in Southern California and Mexicali.
Industries Served
Custom Molding Solutions for Medical, Automotive & Commercial OEMs
With over three decades of manufacturing experience, Mission Plastics Inc. operates 24/7 to provide high- or low-volume customers with the facilities, technical experts, and resources to manage a project from mold making through final fulfillment, producing superior molds and custom plastic products at the most exacting specifications and inspection requirements. Learn More
Scientific molding services include Injection Molding, Insert Molding and Micro-molding, produced with organizational excellence and ISO Quality standards. (ISO 13485)
Industries Served

Medical Molding & Assembly
Support medical device and life science programs with tooling, mold validation, injection molding and assembly. Our Mexicali manufacturing capabilities include ISO Class 8 cleanroom environments for programs requiring controlled production.

Automotive Injection Molding
Develop automotive plastic components with DFM support, material selection assistance, precision tooling, insert molding and automated assembly. Mission Plastics helps your team balance quality, manufacturability and production cost.

Commercial & Industrial Molding
Manufacture custom components for applications such as electrical enclosures, irrigation equipment and consumer products. Our team supports product development, molding and fulfillment to help you move your program forward.
ISO 13485-Certified
Quality Management
Mission Plastics maintains ISO 13485:2016-certified quality management systems for its Rancho Cucamonga technical support operations and Mexicali manufacturing operations. Inspection, measurement and process validation capabilities help support your program’s defined quality requirements.

Exceptional quality and customer experience is the measure of our work—it is the cornerstone of our reputation as an industry leader.
~ Robert Guy, President of Mission Plastics.
U.S. Support and Nearshore Manufacturing in Mexico
Bring engineering coordination and production closer together with Mission Plastics’ North American operations. Our model connects U.S.-based technical support with nearshore injection molding and assembly in Mexicali.
Rancho Cucamonga, Corp. Office
Rancho Cucamonga, Corp. Office
Rancho Cucamonga, California: Engineering, program management, tooling and quality support help your team evaluate requirements and coordinate your project.
MANUFACTURING PLANT CAPABILITIES
Mexicali, Mexico
Mexicali, Mexico
Mexicali, Mexico: Injection molding, cleanroom production and assembly provide manufacturing capabilities supported by tooling, inspection and program management.
About Mission Plastics
Supporting Custom Plastic Manufacturing Since 1982
Founded in 1982, Mission Plastics brings decades of experience to custom injection molding programs. We work with OEM teams to connect design assistance, tooling, production and fulfillment around the needs of each project.
By providing a systematic and full-service plastic molding experience, Mission Plastics will meet and satisfy our customers’ requirements with the highest quality – and added value – by continually improving the effectiveness of our Quality Management System.

100%
Dedicated to Quality

41+
Years of experience
Testimonial
What they're saying about
Mission Plastics.
A few words from our satisfied customers.
~Nilesh Gogri, CareFusion/BD, AirLife Respiratory Consumables
~Bill Campbell, Director of Plant Operations, Safety Syringe
(a Beckton Dickinson Company)
Omar Juarez, Plant Manager, PARKER/LEGRIS
Chancey P. Martin, President, Taral Plastic Container Company
FREQUENTLY ASKED QUESTIONS
Mission Plastics manufactures custom injection-molded plastic components and supports assembly for medical, automotive, commercial and industrial OEMs. Services also include engineering support, tooling, inspection, packaging and fulfillment.
Mission Plastics’ manufacturing facility is in Mexicali, Mexico. Its Rancho Cucamonga, California operations provide engineering, tooling, quality and program management support.
Yes. Mission Plastics offers injection molding and assembly in ISO Class 8 cleanroom environments at its Mexicali facility for projects requiring controlled production conditions.
Yes. Mission Plastics provides Design for Manufacturability (DFM), material selection assistance, prototyping and mold design support to help identify manufacturing challenges before full production.
Yes. Mission Plastics supports tooling, assembly, packaging, kitting, inventory management and logistics, helping customers coordinate multiple stages of a manufacturing program.

