Single drum rollers 2008 Japan, Egypt
Twin drum rollers 2017 3,626 h China
Single drum rollers 2020 2,146 h China
Twin drum rollers 2018 750 h China
Single drum rollers 2016 2,313 h China
Single drum rollers 2019 China
Single drum rollers 2021 Uzbekistan
Twin drum rollers 2019 China
Single drum rollers 2017 2,300 h China
Single drum rollers 2021 2,800 h China
Single drum rollers 2016 2,219 h China
Single drum rollers 2021 2,100 h China
Single drum rollers 2017 China
Single drum rollers 2022 2,568 h China
Single drum rollers 2020 1,800 h China, Fengxian District, 上海
Single drum rollers 2022 120 h China