O-TOUCH has launched a multi-port travel charger with one USB-C port and two USB-A ports. The USB-C port supports 30W PD output, which can charge macbooks to meet the charging needs of multiple devices during travel, and is compatible with various Digital equipment, mobile phones, notebooks, game consoles, cameras, etc.
12V AC adapters are relatively inexpensive, but 24V AC adapters are often more than double the price. By connecting two 12V adapters, you can achieve the 24 volts of current you need without the extra cost. You will be connecting the two adapters in series, which combines the voltage of the two adapters into the total of both without increasing the amperage. If both individual adapters provide 6 amps, for example, they will still provide 6 amps total when connected in series.