... and have no waste gas HK-1850A electric floor road sweeperFEATURES:1,The series HK is equipped with a high ... , cleaning companies, property management companies, square, colleges and universities, enterprise for outdoor cleaning.2,Dynamoelectric homework, the noise be low ... easy driver, maintain convenience.12,HK-A series:Standard type, HK-B series:Half close type, HK-C series:Front glass file breeze ...