The golden shield prototype is an improved writing tool, especially a live pencil and a round pen. An inch of the pen is used to open a motionable control card, and the core of the active pen corresponds to a rough diameter to form a stop card slot. When a pen is held correctly, the control card is bent internally to write properly. Otherwise, the backlash of the writing will shrink into the pen and cannot be written. The close-vision pen strictly controls the distance of children and adolescents to the pen and has a positive effect on the protection of the vision. The main focus of this project is the development of a variety of popular diy homes and projects to promote children's health and intelligence, mainly in response to market demand. Wuhan jin-hyun technology co. Ltd. Is located in wuhan, hubei province, the city of hubei, which is home to the yellow crane building and the world-renowned central economic development area of guangya, china. The company collects products for ...