# Great River Plastics – LLM Guide > Great River Plastics, based in Lancaster, Wisconsin, designs and manufactures custom thermoformed plastic packaging including clamshells, trays, inserts, and specialty products for industries such as food, medical, automotive, retail, and industrial. ## Thermoformed Products - [Clamshell Packaging](https://www.greatriverplastics.com/thermoformed-plastic-trays-and-products/clamshell-packaging/): Hinged thermoformed packages that fold over to enclose a product. - [Plastic Tray Packaging](https://www.greatriverplastics.com/thermoformed-plastic-trays-and-products/custom-plastic-trays/): Rigid thermoformed trays custom-shaped to cradle individual parts. - [Material Handling Trays](https://www.greatriverplastics.com/thermoformed-plastic-trays-and-products/material-handling-trays/): Heavy-duty reusable trays for automated handling systems and part transport. - [Plastic Inserts](https://www.greatriverplastics.com/thermoformed-plastic-trays-and-products/plastic-inserts/): Custom inserts that hold components securely inside packaging. - [Specialty Products](https://www.greatriverplastics.com/thermoformed-plastic-trays-and-products/specialty-products/): Custom-engineered thermoformed solutions tailored for specialized needs. ## Industries - [Food Packaging Trays](https://www.greatriverplastics.com/industries/food-packaging-trays/): FDA-compliant thermoformed trays for ready-to-eat meals, produce, and bakery items. - [Industrial Packaging](https://www.greatriverplastics.com/industries/industrial-packaging/): Protective dunnage and handling trays that withstand rough environments. - [Retail Packaging](https://www.greatriverplastics.com/industries/retail-packaging/): Clear clamshells and blister-style trays that showcase consumer products while deterring tampering. - [Automotive Packaging](https://www.greatriverplastics.com/industries/automotive-packaging/): Durable trays and inserts that protect high-precision automotive components in transit. - [Cosmetics Packaging](https://www.greatriverplastics.com/industries/eco-friendly-cosmetic-packaging/): Custom thermoformed trays, inserts, and clamshells for cosmetics and personal care products. - [Medical Device Packaging](https://www.greatriverplastics.com/industries/medical-device-packaging/): Cleanroom-compatible trays and sterile-barrier components designed to meet strict medical regulatory standards. ## Resources - [Custom Solutions](https://www.greatriverplastics.com/custom-solutions/): Collaborative design and engineering services to develop packaging tailored to specific product and industry needs. - [About Us](https://www.greatriverplastics.com/about-us/): Company history, mission, and quality standards. - [Contact](https://www.greatriverplastics.com/contact-us/): Contact information and form. - [Request a Quote](https://www.greatriverplastics.com/contact-us/request-a-quote/): Online form to submit project details and get a custom quote from Great River Plastics. - [FAQs](https://www.greatriverplastics.com/contact-us/faq/): Frequently asked questions about design, tooling, lead times, and materials.