| Resin Grade | Manufacturer | Category | Trademark |
|---|---|---|---|
| Diamond GPPS GP-525 | Diamond Polystyrene | PS (GPPS) | Diamond GPPS |
| Diamond GPPS GP-500N | Diamond Polystyrene | PS (GPPS) | Diamond GPPS |
| Diamond GPPS GP-550P | Diamond Polystyrene | PS (GPPS) | Diamond GPPS |
| Diamond GPPS GP-543 | Diamond Polystyrene | PS (GPPS) | Diamond GPPS |
| Diamond GPPS GP-550 | Diamond Polystyrene | PS (GPPS) | Diamond GPPS |
| Diamond GPPS GP-560 | Diamond Polystyrene | PS (GPPS) | Diamond GPPS |