RSP’s plastic injection molding services cover the full spectrum of production support—from initial engineering and design review to mold flow analysis, tooling design and fabrication, and precision part molding. Whether you're producing a few prototypes or scaling to high-volume manufacturing, our commitment to quality and professionalism remains the same.
Flexible Manufacturing Backed by Global Reach
In today’s volatile trade and tariff landscape, your supply chain needs to adapt fast. RSP is vertically integrated offering Metal Fabrication, Silicone Molding, Keypad & Membrane Switches, Custom Packaging, Turnkey Assembly, and Logistics. With over 20 years of global manufacturing experience, RSP is uniquely equipped to help you optimize production across five key regions—giving you the agility to meet market demands and avoid costly disruptions.
- USA: domestic manufacturing with no tariff risk, tools can be transferred from Asia to reduce upfront costs
- China: highly efficient robust supply chain, cost-effective tooling & high-volume capabilities
- Vietnam: good choice for U.S. tariff-sensitive products
- Malaysia: excellent high-tech molding and assembly capabilities
- India: growing hub for manufacturing, assembly and secondary operations
Why Choose RSP as Your Manufacturing Partner?
At RSP, Inc., we specialize in custom plastic injection molding that transforms your ideas into fully realized products.
With over 60 years of manufacturing expertise, we combine proven processes with the latest technologies to deliver precision, quality, and flexibility. Our services go beyond molding—we offer comprehensive, turnkey manufacturing solutions including tooling, secondary operations, and value-added assembly.
What sets us apart?
- End-to-end support: From design consultation to final delivery, our team works closely with you to optimize performance, cost, and manufacturability.
- Transparent communication: Once tooling begins, we provide weekly updates complete with progress notes and images—keeping you fully informed every step of the way.
- Global capabilities: With production options in the U.S., China, Vietnam, Malaysia, and India, we help you navigate tariffs, timelines, and supply chain shifts with ease.
Whether you're launching a new product or streamlining existing production, RSP brings the reliability and scale to meet your goals—on time and on budget.
Reduced Product Cost & Improved Lead Times
RSP has helped thousands of customers reduce product costs while offering them best-in-industry lead times. We have invested in automation and robotics to help drive down costs to save our customers money and improve quality. As a company, we maintain sufficient facilities and equipment that allow us to grow and manage capacity to keep consistent short lead times and still have the flexibility to respond to urgent requests.
Better Products
RSP applies the same high standards and quality to every plastic injection molding project we undertake. It starts with our senior engineering team that together have over 100 years of plastic molding experience. It continues with our investments in new facilities and equipment. Our team is dedicated to quality and has achieved ISO13485 certifications for medical-grade molding. We are also FDA registered for manufacturing medical devices. Even if your project is not medical in nature, you can rest assured the controls and processes are in place to ensure success and quality. Internally, we use GBT 14486-2008 molding tolerances and also work with clients on critical measurements.
Types of Available Plastic Injection Materials
RSP can provide stock mold or custom plastic injection services in 1000’s of materials including some of the most popular materials:
- Nylon (PA66 + Glass Fill)
- Polyamide (PA12)
- Polycaprolactam (PA6 + Glass Fill)
- Polyoxymethylene (POM)
- Polystyrene (PS)
- Polystyrene - High Impact (HIPS)
- Acrylonitrile Butadiene Styrene (ABS)
- Polycarbonate (PC + Glass Fill)
- Polyether Ether Ketone (PEEK)
- Polyetherimide (Ultem + Glass Fill)
- Thermoplastic Polyurethane (TPU)
- Thermoplastic Rubber (TPR)
- Polyethylene (PE)
- Polypropylene (PP)
- Polyoxymethylene (POM)
- Recycled Ocean Materials: including PET, Nylon, PC, and more...
- Biocomposite Materials: including Hemp, Rice, Flax, Cotton and More...
Plastic Injection Capabilities
Here are a few capabilities we proudly specialize in:
- Sonic welding & gluing
- CNC surface grinding
- Naturally balanced runners
- Face-mounted inserts
- Quick mold change systems
- Thermoplastic engineering materials
A few other things to note:
Industries We’ve Worked In
Our cross-functional experience allows us to assist all customers in meeting their plastic manufacturing objectives. We have experience with the following industries:
- Telecommunications
- Consumer
- Industrial
- Lighting
- Housewares
- Medical
- Agricultural
- Automotive
How Much Are Plastic Injection Services?
At RSP, we provide plastic injection molding solutions that fit a wide range of budgets—from small single-cavity prototypes to complex multi-cavity production tools.
Typical Mold Costs:
- Simple, small molds: $1,000 – $6,000
- Standard production molds: $7,000 – $9,000 (average)
- Large or complex molds: $25,000 – $100,000+
Pricing depends on several key factors, including:
- Part size and geometry
- Number of cavities
- Material selection
- Expected production volume
- Surface finish and tolerances
We strive to keep costs predictable and transparent. Smaller projects can often move from design to production for under $4,500, while high-complexity programs may require investments upward of $100,000 depending on tooling and engineering scope.
Our goal is to deliver maximum value with minimal friction. That’s why we frequently bundle engineering and design-for-manufacturing (DFM) services into your tooling package—and in many cases, we provide them at no extra cost.
What to Expect: From Quote to Production
Here’s how we ensure a seamless, cost-effective process:
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Request a Quote
Share your project details with an RSP team member for a fast, accurate estimate.
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Design for Manufacturing (DFM) Review
Our engineering team evaluates your part for moldability and performance, suggesting enhancements to reduce cost and improve quality.
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3D Tooling Model & Approval
After DFM is complete, we’ll present a 3D model of your mold. No tooling begins until you approve the design—ensuring alignment at every step.
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Tooling and Weekly Progress Updates
Once approved, your mold enters production. We keep you fully informed with weekly updates, including tooling photos and progress notes.
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First Article Samples & Launch
After tooling is complete, we ship your initial samples for review and validation.
To help you plan effectively, we’ve included a helpful chart below that outlines what to expect based on the type of injection molding project you’re pursuing.
| Field | Prototyping | Short Run | Contract Manufacturing |
|---|---|---|---|
| Type of Service | CNC or 3D Printing | Low volume tooling with “soft” steel or aluminum | High-quality hardened steel tooling |
| Avg. Project Size | 1-500 | 25-5000 | 25 - no limit |
| Tooling Lead Times | 1-15 days | 15-25 days | 25-60 days |
| Manufacturing Lead Times | 1-15 days | 5-30 days | 15-60 days |
| Tolerances | .003 - .010” varies | GBT 14486-2008 | GBT 14486-2008 |
| Material Options | Limited: ABS, PC, Nylon, TPU... | No limit | No limit |
Environmental & Biodegradable Material Options
We take pride in our socially responsible and environmentally friendly facilities in the US and overseas. Our state-of-the-art plastic injection molding and assembly facility in Asia provides affordable tooling and molding while adhering to the United States’ manufacturing practices and quality standards. At RSP, we pride ourselves in doing our part while practicing sustainable manufacturing and utilizing eco-friendlier manufacturing materials.
Ocean Plastic
RSP is part of a growing group of manufacturers that have officially joined Oceanworks® and make products from ocean plastic. We supply and manufacture with ocean plastic for several companies that produce consumer products and reusable packaging solutions. These companies are proud to be part of the solution to create a more sustainable environment while meeting an ever-increasing demand for responsibly made products. Contact us today to see whether ocean plastic is a good fit for your next product.
Biocomposite
RSP is using eco-friendlier plastics to reduce environmental impact in the molding industry. RSP biocomposite plastics include hemp, rice, flax or cotton fibers added to petroleum-based plastic. This reduces the amount of plastic that is used, which in turn reduces pollution.
Hemp is a leading-choice fiber, as some of the largest car manufacturers are integrating it into their production. Beyond reduced environmental impact, there is good reason for choosing natural fibers: performance. Hemp-infused plastic, for example, can be up to 5 times stiffer and 2.5 times stronger than polypropylene (PP).
More Injection Molding Reading Material
Request a Quote
If you are like many of our customers, you think about your product 24/7. You dream of how it will change the market, or maybe you’re creating a brand-new market. But when it comes to executing the product, you’ve realized you need some help. That’s where we come in.
Interested in learning more about our plastic, ocean plastic and bioplastic injection molding process and what we can do to help manufacture your product? Start by filling out the information below so we can get a good understanding of what you may need from us. We will respond as quickly as possible to your request; however, please allow at least 24 business hours.
Need immediate assistance? Call our sales professionals directly based on the time zone that works best for you. English speakers are available at all locations.
USA: +1-866-329-1804 - UTC-6: Central Standard Time
China: +86-0755-8366-3414 - UTC +8: China Standard Time