Recently, the first batch of Shantui SR20MA and SR22MA (China III) mechanical single-drum road rollers were successfully launched in the assembling workshop of the road machinery company. The road rollers, using Weichai China III electronically controlled engines in accordance with the latest national emission requirements, are independently developed cost-effective mechanical drive rollers. At present, the prototype has been completed, trial calibrated, and been running in good condition. In the future, subsequent performance verification will be performed.