| Business | Phone |
| A Schulman Inc 500 Cascade West Pkwy Se, Grand Rapids 49546 | (616) 455-8776 |
| Chase Plastics Svc 1115 Cadillac Dr Se, Grand Rapids 49506 | (616) 246-7190 |
| Cook Composites & Polymers Co 1415 Steele Ave Sw, Grand Rapids 49507 | (616) 243-4578 |
| D N Plastics 1415 Steele Ave Sw, Grand Rapids 49507 | (616) 942-6060 |
| Ge Plastics 2564 Mapleview St Se, Grand Rapids 49508 | (616) 698-8354 |