(1) finishing of Gefei brand trademark; (2) There are two long holes in the front tube of the "Flying Pigeon" and "February 28th" bicycle frames, and the related line of the five-way joint is small in size and weighs about 3485g. (3) The front pipe of the "26" frame has two long holes, the rear joint has English and numbers, the related line of the five-way joint is low, and the intersection joint of the vertical beam and the lower beam of the female frame is inclined. (4) The front tube and the lower cross beam of the "24" frame are provided with connectors, and the fork is inserted into the five-way joint for welding. (5) The center of "26" and "28" handlebars has a hexagonal plane, the bolt has a big arc, both sides are round, and the edge of the bracket pad surface has a slight arc. (6) The buckle length of the front fork vertical plate of "26" and "28" frames is 30%, and the fork legs are greatly bent. (7) The flying pigeon signs on the rims of "26" and "28" are located at a hole far away from the valve hole. (8) The tail plug of the large chain sleeve is flush. (9) The single support connection support point is located at the vertical fork and the horizontal fork. (10) Both sides of the rim are welded, and the handlebar is composed of qualified parts, and the painted parts are partially phosphatized and all painted; In addition, it is packed in wooden cases, each containing 5 auto parts. There are various types of flying pigeon tags on the wooden box. Counterfeit products: rough trademark processing and inaccurate modeling specifications; The front face tube has no paint holes or only round holes; Rings, handlebars and other flying pigeons are printed with marks and patterns, and the wings and tails of pigeons are narrow, which are fake steel seals; There is no phosphating process and no paint covering for each paint part; Most of the miscellaneous items are purchased by the purchasing unit, and they are not packed in wooden cases.