This product is used for four-axis drone. The upper body shell is made of 3k twill weave fabric. It is made of high-gloss transparent gel coat and cured by vacuum introduction. It is lighter and stronger than plastic parts under the same size. !! So far, many drone manufacturers are using composite materials as the preferred material for drone housings. Some people say that drones shield signals and cannot receive GPS signals. This problem can be avoided during design and during the production process. Where the GPS signal is placed, glass fiber cloth can be laid on the whole part. Carbon fiber can be used in this way, so that the signal can be received and the strength can be improved!