| 7 5 | 2021 | | | 7500 | 2500 | | 5000 | | | 2021 | 2021 | | 2018 2019 | 2020 | | | | | | | | 2950 | 3000 | 6 | | | | | | | | | | | | | | | | 2950 | 3000 | 6 | | | | | | | | | | 7 7 | 11 | www.impta.com.cn | | | | |