Please draw and write gently on the board with magnetic pen and don't draw and with too much strenght otherwise it will decrease the service life magnetic board. wrie vertically with the magnetic pen please don't keep it in high tempreture place for long time to pervent deformation please don't draw and write on the board with other pens except magnetic pen such as sign pen, pencil , ball pen, and so on otherwise it can't erase the writing and make the magnetic surface blurred and messy