| Resin Grade | Manufacturer | Category | Trademark |
|---|---|---|---|
| Wankai WK801 | Zhejiang Wankai New Materials Co., Ltd. | PET | Wankai |
| Wankai WK811 | Zhejiang Wankai New Materials Co., Ltd. | PET | Wankai |
| Wankai WK821 | Zhejiang Wankai New Materials Co., Ltd. | PET | Wankai |
| Wankai WK851 | Zhejiang Wankai New Materials Co., Ltd. | PET | Wankai |
| Wankai WK881 | Zhejiang Wankai New Materials Co., Ltd. | PET | Wankai |