Grand Traverse Plastics

Driving Innovation in Injection Molding: GTP – Over 40 Years of US Manufacturing Excellence. GTP stands as a testament to four decades of leadership in custom plastic injection molding. From our three state-of-the-art manufacturing plants in Northern Michigan, housing presses ranging from 300T to 1500T, we engineer and produce high-quality, reliable components that power a diverse array of global industries. Our foundation is built on an unwavering commitment to quality, evidenced by our IATF 16949 certification. This gold standard, born from the demands of the automotive sector encompasses ISO 9001 requirements, ensures rigorous process control, continuous improvement, and the highest levels of precision in every part we deliver. Our distinction as a five-time GM Supplier of the Year further reinforces our proven track record for operational excellence and customer satisfaction. With a robust engineering and sales presence in Troy, Michigan, we offer accessible and responsive support, fostering deep collaborations with our clients. While we are a cornerstone supplier to the automotive industry, our expertise and capacity seamlessly translate to critical components for heavy truck, industrial, sporting gear, and other demanding applications. GTP is more than a manufacturer; we are a partner dedicated to innovation and sustainable solutions. Our commitment to domestic supply chain strength provides a low-risk, high-reliability solution for companies seeking to avoid the complexities of offshore manufacturing. As a privately held company rooted in Northern Michigan, we pride ourselves on a culture that values teamwork, respect, and positive community impact, ensuring shared value creation. Discover how GTP's blend of local craftsmanship and global impact can elevate your products. Visit