Single drum rollers 2019 2,100 h China
Single drum rollers 2020 1,500 h China
Single drum rollers 2016 2,220 h China
Single drum rollers 2018 1,500 h China
Single drum rollers 2019 1,100 h China
Single drum rollers 2016 2,388 h China
Single drum rollers 2021 600 h China
Single drum rollers 2016 2,316 h China
Single drum rollers 2022 800 h China, Hefei