With the rapid development of e-commerce, express packages from all over the world, which is a great challenge for express companies, but in delivery, the most troublesome problem for express companies is the “last-mile”, which many expre

Forklifts are divided into electric forklifts and internal combustion forklifts according to the power unit. Electric forklifts mostly use direct current (DC) motors, whose mechanical characteristics meet the low-speed and high-torque work requiremen