Established by shanghai exchange industries ltd., the centre is dedicated to the development and promotion of hand-in-hand, continuously seeking new developments and breakthroughs, bringing creative changes to prevent near-sightedness and camelbacks in primary and secondary education, learning writing by the world's newer students + the close-observation camelback health model, and creating new platforms for the country's larger student goods. The project describes the use of a hand-in-hand close vision pen as a good practice for a child - to stand up, head, back, effectively protect his or her vision, ** his or her near-sightedness, and effectively correct a child who has already received light near-sighted and hunchback, giving the child a bright future. This means that a child can only be properly written if he/she has the correct posture and writing habits, which would essentially prevent the child from being in a close look. A hand-in-hand close-sighted pen takes a comprehensiv...