Thunderbird rubber band powered DIY airplane model

Service: Printing can be added, gift box packaging (Contact customer service for minimum order quantity) Product Name: Thunderbird Product color: color randomly sent Product specifications: Product packaging: wingspan 400mm, length 500mm Packing quantity: 320 pieces/box Outer box specifications: Whole box weight: gross: kg net: kg Return and exchange service: This product is non refundable. (This product is basically not bad, the quality is very good) Material: foam+bamboo pole+plastic Teaching points: Understanding the concepts of wing shapes and dihedral angles, introductory textbooks on aviation knowledge Product advantages: Enlightenment in aircraft dynamics, hands-on ability, capable of flying for over 60 seconds 1. Release: Aim at 10 degrees to the right of the wind direction and easily push the plane out (do not throw forcefully) 2. Aircraft status adjustment (1) If there is a sharp right turn during flight, the vertical tail can be slightly adjusted to the left (2) If there is a sharp left turn during flight, the vertical tail can be slightly adjusted to the right (3) If there is a sudden upward flip during flight, the horizontal tail can be slightly adjusted downwards (4) If there is a sudden dive during flight, the horizontal tail can be slightly adjusted upwards Instructions for use: There is an installation guide on the suction cardboard. First, turn the propeller clockwise for dozens of turns, then hold the machine with your right hand and hold the propeller with your left hand, gently pushing it out in the wind. Observing the flight trajectory, it is best to slowly hover and ascend. Product quality: Our factory adheres to the production policy of sincerity and quality as the foundation, and strives to develop a win-win situation with customers. So the production process of toys is carefully inspected, tested, packaged and shipped. We hope that customers receive good products and business is prosperous, so that our factory can receive returns. Therefore, customers can rest assured that purchasing is mutual and money is earned together. Of course, toys may be damaged during transportation and use. Our factory has introduced the following after-sales policies: Off topic: Our factory's products have very low profits, so we cannot afford the return and exchange shipping costs. Some special products are discounted and returned purely out of necessity, and survival is not easy. We hope for your understanding. (If the customer does not accept my after-sales plan, they can hold off on purchasing until they understand and agree before placing an order) Additional tax points for invoicing, please consult customer service for details