Two: There is little difference in the price of elevators of the same grade, in other words, elevators with little price difference are in the same grade.
Three: The elevators mentioned above have factories in China, just like Nokia mobile phones. Unless you are a high-end hotel or office building, they are generally more localized. Imported ones are generally high-end, domestic ones are low-end, like BMW 320 and BMW 730, depending on which model you want.
Four: The price is of course very poor. In short, you can compare cars with the same reason.