| Model No. | Surface Treatment | 2D | 3D | |
| GRC20-25 | Normal/Antirust/Black Coating |  |  |  |
| Corrosion - Resisting | | | | |
| GRC20-35 | Normal/Antirust/Black Coating | | | |
| Corrosion - Resisting | | | | |
| GRC20-45 | Normal/Antirust/Black Coating | | | |
| Corrosion - Resisting | | | | |
| GRC20-55 | Normal/Antirust/Black Coating | | | |
| Corrosion - Resisting | | | |