SRA super retarder agent
chelating agent sequestering agent
sequestering agent chelating agent
building gypsum retarder
car retarder
车减速器
阻车器车辆减速器
车辆减速器
捕车器
装车台
轨道制动器
阻车器
cement setting retarder
eddy current retarder brake
FC surface high performance retarder