| Frame | Model type | Establish year | Name |
|---|---|---|---|
| Model 354 | |||
| 101 | MR50 | 1972 | MR50 |
| 200101 | MR50-2 | 1975 | MR50Ⅱ |
| 400101 | MR50 | 1977 | MR50 |
| 600101 | MR50 | 1978 | |
| Model 3T2 | |||
| 101 | MR50-3T2 | 1979 | MR50 |
| 100101 | MR50 4J8 | 1980 | |
| Frame | Model type | Establish year | Name |
|---|---|---|---|
| Model 354 | |||
| 101 | MR50 | 1972 | MR50 |
| 200101 | MR50-2 | 1975 | MR50Ⅱ |
| 400101 | MR50 | 1977 | MR50 |
| 600101 | MR50 | 1978 | |
| Model 3T2 | |||
| 101 | MR50-3T2 | 1979 | MR50 |
| 100101 | MR50 4J8 | 1980 | |