It is a high-precision instrument suitable for the preparation of thin films by dipping and pulling method. The dipping and pulling method is one of the common methods for preparing thin films by the sol-gel method (Sol-Gel method, SG method for short). Using high-quality accessories, precise control of the pulling speed, repeated coating without position deviation. The pulling speed, pulling height, cycle coating times, dipping time, descending speed and dwell time can all be precisely controlled by the program. Suitable for common substrates such as glass, Si (100), Si (111), sapphire (Al2O3), ceramic and resin substrates.