The fan is equipped with an external adapter at an additional cost of 23 yuan per piece, and it becomes a remote control fan at an additional cost of 25 yuan per unit. The solar panel is added at an additional cost of 7 yuan per watt, and the solar panel power cord is added at an additional cost of 2 yuan per meter. Colorful packaging is added at an additional cost of 2 yuan per unit, and the outer packaging is added at an additional cost of 2 yuan per unit. Note! This quote is the price of the day, and all prices are subject to the unit price discussed on the day of the order confirmation.