# Precision Molded Plastics, Inc.
> Precision Molded Plastics provides custom tooling and medium- to high-volume plastic injection molding from its Southern California facility.
Precision Molded Plastics, Inc. is a vertically integrated plastic injection molding manufacturer in Upland, California. Founded in 1979, it builds custom molds and tooling and produces small to midsize parts for medium- to high-volume programs with a 10,000-unit annual minimum. Services include design and engineering support, insert molding, overmolding, decorating, machining, assembly, packaging, and mold transfers. Its quality management system is certified to ISO 9001:2015.
- URL: https://www.precisionmoldedplastics.com/
- Brand: Precision Molded Plastics, Inc., Precision Molded Plastics Inc, Precision Molded Plastics, PMP, Plastics Made Perfect, Plastics Made Perfect™, precisionmoldedplastics.com
- RSS Feed: https://www.precisionmoldedplastics.com/feed/
- Full version: https://www.precisionmoldedplastics.com/llms-full.txt
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## Posts
- [Reverse Injection Mold](https://www.precisionmoldedplastics.com/blog/reverse-injection-mold.md): When discussing plastic injection mold construction, people sometimes refer to a “reverse mold.” What exactly does that mean, and how is a reverse mold different from a standard injection mold? (updated: 2025-12-12)
- [Top 20 Things to Look for in a Plastic Injection Molding Supplier (Part 3 of 4)](https://www.precisionmoldedplastics.com/blog/evaluating-molders-3.md): The third part of this article contains five more features of a potential molding partner to include in your research and review. (updated: 2023-10-09)
- [Top 20 Things to Look for in a Plastic Injection Molding Supplier (Part 2 of 4)](https://www.precisionmoldedplastics.com/blog/evaluating-molders-2.md): Searching for a new supplier takes time and effort. Here’s the second installment of this article with five more factors to consider in your analysis. (updated: 2023-10-09)
- [What to Expect Regarding Lead Times Associated with Plastic Injection Molding](https://www.precisionmoldedplastics.com/blog/molding-lead-times.md): While all manufacturing programs are different, what are reasonable expectations for how long certain tasks should take? Here’s an overview of some standard lead times for common elements of the mold building and injection molding process. (updated: 2023-10-09)
- [Top 20 Things to Look for in a Plastic Injection Molding Supplier (Part 1 of 4)](https://www.precisionmoldedplastics.com/blog/evaluating-molders-1.md): Finding a custom plastic injection molding supplier can be a long and arduous task. That being said, this article is intended to offer some perspective to make the process a little easier, more thorough and, consequently, successful. (updated: 2023-10-09)
- [Top 20 Things to Look for in a Plastic Injection Molding Supplier (Part 4 of 4)](https://www.precisionmoldedplastics.com/blog/evaluating-molders-4.md): The final installment in this four-part series on the qualities to look for in a plastic injection molding supplier and how to consider each. (updated: 2023-06-08)
- [The Relationship Between Mold Cavities and Part Price](https://www.precisionmoldedplastics.com/blog/calculate-mold-cavities.md): When having a mold built, buyers often make a guesstimate about the number of cavities the tool should have. However, instead of guessing, there’s a reasonably objective and straightforward way to determine the number of cavities appropriate for a job. (updated: 2023-06-08)
- [The Basics of CAD Part Modeling & File Types](https://www.precisionmoldedplastics.com/blog/cad-part-modeling.md): Changes in technology used for the design and manufacturing of plastic parts can make it challenging to keep things straight. Accordingly, what follows should serve as a simple introduction to the basics of modern computer part modeling and file types. (updated: 2023-06-08)
- [Technopolymers & Replacing Metal with Plastic](https://www.precisionmoldedplastics.com/blog/metal-parts-to-plastic.md): The word “technopolymer” is used by different people and with seemingly distinct definitions. Generally speaking, the term is referenced in the context of replacing metal with plastic when producing certain... (updated: 2023-06-08)
- [Part Decoration for Plastic Injection Molding](https://www.precisionmoldedplastics.com/blog/part-decoration.md): There are a variety of methods for decorating plastic parts, and each has certain advantages and considerations, depending on the part application, the decorating purpose, and the resin being used. Here’s a quick summary of the most common techniques. (updated: 2023-06-08)
- [Choosing the Right Plastic for Injection Molding](https://www.precisionmoldedplastics.com/blog/choosing-your-plastic.md): Once you know the characteristics your injection molded part needs, how do you identify the right resin to use? Here’s a quick summary of the approach to take. (updated: 2023-06-08)
- [Moving Your Plastic Injection Mold to a New Supplier](https://www.precisionmoldedplastics.com/blog/moving-your-mold.md): Moving molds from your existing molder to a new supplier can be a tricky process. Not to worry; with a little planning, transferring your tooling to a new vendor can be done in a relatively easy and pain-free way. (updated: 2023-06-08)
- [Plastic Apples to Apples](https://www.precisionmoldedplastics.com/blog/plastic-apples-to-apples.md): When receiving bids on a new plastic injection molding program, it is important to gather and analyze all of the relevant data. This is true for both the building of molds and for the production of parts. (updated: 2023-04-21)
- [Top 10 Reasons to Build Bridge Tooling](https://www.precisionmoldedplastics.com/blog/top-10-reasons-to-build-bridge-tooling.md): At the beginning of a plastic injection molding program, investing in bridge tooling (e.g., family molds) to bridge the gap between R&D/prototypes and multi-cavity production tools can be a good, cost-effective approach to take. Here are 10 reasons why. (updated: 2023-04-21)
- [Mold Qualification vs Process Validation](https://www.precisionmoldedplastics.com/blog/mold-qualification-vs-process-validation.md): When a new injection mold is built, it usually goes through two general stages of testing and evaluation. These phases serve somewhat different purposes, although they are related, and both are necessary for the mold to be ready for production. (updated: 2023-04-21)
- [Time and Motion Studies](https://www.precisionmoldedplastics.com/blog/time-and-motion-studies.md): In addition to manufacturing, some plastic injection molders also provide assembly services. While there are different types of product assemblies, a standard approach for determining what the process will entail is referred to as performing a time and motion study. (updated: 2023-04-21)
- [Interchangeable Inserts](https://www.precisionmoldedplastics.com/blog/interchangeable-inserts.md): What are the tooling options for similar but differing parts? Of course, you can’t change the size or configuration of a steel mold… Or, can you? (updated: 2023-04-21)
- [Bioplastics & Injection Molding](https://www.precisionmoldedplastics.com/blog/bioplastics-injection-molding.md): What exactly are bioplastics, how do they differ from traditional plastics, and what are the issues and options associated with them? Additionally, how do they fit into a modern ecologically-sound commercial framework? (updated: 2023-04-21)
- [Additives for Plastic Injection Molding](https://www.precisionmoldedplastics.com/blog/additives-for-plastic-injection-molding.md): The plastics used for injection molding come in a variety of types, grades and compositions. When a resin meets most but not all the requirements of a product, certain additives can be used to add desired qualities to the material. (updated: 2023-04-21)
- [Why You Need an ISO-Certified Molder](https://www.precisionmoldedplastics.com/blog/why-you-need-an-iso-certified-molder.md): When looking for an injection molding supplier, there are certain “check boxes” you most likely include in your search criteria. Nevertheless, how can you obtain a high degree of certainty the vendor has and will maintain the characteristics you want? (updated: 2023-04-20)
- [Economic Order Quantity](https://www.precisionmoldedplastics.com/blog/economic-order-quantity.md): Determining the best approach toward purchasing materials from your suppliers can be challenging. Luckily, there’s a relatively straightforward method for calculating the optimal frequency and amount of goods to order to maintain and replenish inventory in a cost-effective manner. (updated: 2023-04-20)
## Pages
- [Contact Us](https://www.precisionmoldedplastics.com/contact-us.md): We want to help get your plastic injection molding project started today! Contact us to get a quote or with any questions you may have. We are always happy to help! (updated: 2026-09-11)
- [Request A Quote](https://www.precisionmoldedplastics.com/request-a-quote.md): Get a quick, thorough and detailed quote for fabrication of new tooling, for plastic injection molding, and for value-added services. (updated: 2026-08-27)
- [Resource Center](https://www.precisionmoldedplastics.com/resources.md): We offer resources to help you with your plastic manufacturing decision making, from brochures to data sheets. (updated: 2026-08-27)
- [Bioplastics](https://www.precisionmoldedplastics.com/services/bioplastics.md): PMP has the experience with bioplastics and the necessary resources to help you develop a profitable bioplastic injection molding program. (updated: 2026-08-27)
- [Transfer Your Molds](https://www.precisionmoldedplastics.com/services/transfer-your-molds.md): Your Plan for an Effortless Mold Transfer (updated: 2026-08-27)
- [News & Events](https://www.precisionmoldedplastics.com/news-and-events.md): Get the lasted PMP News. (updated: 2026-08-27)
- [Home](https://www.precisionmoldedplastics.com/index.md): High volume plastic injection molder in Southern California committed to manufacturing the highest quality products with unsurpassed, personalized customer service. (updated: 2026-04-09)
- [Privacy Policy](https://www.precisionmoldedplastics.com/privacy-policy.md): Privacy Policy PLEASE READ THESE TERMS AND CONDITIONS OF USE ("AGREEMENT") BEFORE ACCESSING OR USING THIS WEBSITE. The following Terms and Conditions of Use apply to any visitor or user... (updated: 2025-08-25)
- [Legal Notice](https://www.precisionmoldedplastics.com/legal-notice.md): Our Legal Notice, Terms of Use. (updated: 2025-08-25)
- [Plastic Injection Molding Materials](https://www.precisionmoldedplastics.com/plastic-injection-molding-materials.md): Plastic Injection Molding Materials COMMON THERMOPLASTIC POLYMERS The base materials used for plastic injection molding generally are referred to as thermoplastic polymers. There are many different types of these plastics,... (updated: 2025-08-25)
- [FAQs](https://www.precisionmoldedplastics.com/faqs.md): Answers to frequently asked questions when working with Precision Molded Plastics, when building new tooling, and about plastic manufacturing. (updated: 2025-08-25)
- [Industries Served](https://www.precisionmoldedplastics.com/services/industries-served.md): Precision Molded Plastics serves a variety of industries. From building supplies and industrial products to aerospace and consumer products, we are ready to serve you and your industry! (updated: 2025-08-25)
- [Capabilities](https://www.precisionmoldedplastics.com/services/capabilities.md): Precision Molded Plastics offers comprehensive plastic injection molding services all under one roof. (updated: 2025-08-25)
- [Mold Building](https://www.precisionmoldedplastics.com/services/mold-building.md): Our team provides support, services and guidance to assist you in developing a dependable and profitable molding program and an overall more proficient supply chain. (updated: 2025-08-23)
- [Message From The President](https://www.precisionmoldedplastics.com/message-from-the-president.md): A Message from Precision Molded Plastics's President. (updated: 2025-08-23)
- [Environmental Sustainability](https://www.precisionmoldedplastics.com/environmental-sustainability.md): We have partnered with Operation Clean Sweep and are committed to safeguarding and preserving our environment and to reducing our carbon footprint. (updated: 2025-08-23)
- [Made In The USA](https://www.precisionmoldedplastics.com/made-in-the-usa.md): Proud members of the American Made Matters organization, which is dedicated to educating consumers on the importance of buying made in USA products. (updated: 2025-08-23)
- [Quality](https://www.precisionmoldedplastics.com/quality.md): Our QMS is a dynamic, process-oriented structure that governs our entire operations. (updated: 2025-08-23)
- [Glossary](https://www.precisionmoldedplastics.com/glossary.md): Learn about common plastic injection molding processes and terminology. (updated: 2025-08-23)
- [Services](https://www.precisionmoldedplastics.com/services.md): Looking for injection molding services? We offer a wide array of services. Contact us to get your project started today! (updated: 2025-01-28)
- [About](https://www.precisionmoldedplastics.com/about.md): Precision Molded Plastics provides services, resources and guidance to help people get the most out of their plastic injection molding. (updated: 2025-01-28)
- [Careers](https://www.precisionmoldedplastics.com/careers.md): Are you looking to join the PMP team? We're hiring! Submit your resume today to get your career started! (updated: 2023-11-01)
- [Thank You RFQ](https://www.precisionmoldedplastics.com/request-a-quote/thank-you-rfq.md): Thank You Thank you for your quote request. You should receive a confirmation email from us within a few minutes. If you do not see one, please be sure to... (updated: 2023-03-21)
- [Thank You Contact](https://www.precisionmoldedplastics.com/thank-you-contact.md): Message Sent Thank you for contacting us. We will respond to your submission at our soonest convenience. Back To Home Page (updated: 2023-03-08)
- [Conditions Of Use](https://www.precisionmoldedplastics.com/conditions-of-use.md): Conditions Of USe Conditions of using our website This website promotes the business referred to on it. In these conditions, the business will be referred to as ‘we’ and/or ’our’.... (updated: 2022-01-24)
- [User Agreement](https://www.precisionmoldedplastics.com/user-agreement.md): User Agreement More details coming soon. Have Additional Questions? (818)530-5100 (updated: 2021-11-22)
## Optional
- [Blog](https://www.precisionmoldedplastics.com/category/blog/): 21 posts
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