According to the material, there are aluminum alloy, stainless steel and steel. Among them, aluminum alloy is characterized by being relatively lightweight, stainless steel has a shiny and translucent appearance, and the price of steel is relatively cheaper.
According to the battery, there are lead-acid batteries and lithium batteries.
According to performance, there is ordinary mobility, reclining type, reclining and standing, versatility, and so on.
According to the appearance quality, it is divided into painting and spraying, electroplating, plastic, welding, etc.
