Requirements of spray pen on trachea length

The length of the air pipe of the pen sprayer can be divided into 1.8m and 3m according to requirements. Measure the length of the air duct of the pen according to the air duct of the pen used. Pen-spraying is a precise tool, which can produce very fine lines and soft gradient effects. At that time, the role of pen spray was to help photographers and painters use it to modify the picture. However, the potential function of pen spray was quickly recognized by people, and it was widely used and developed. The artistic expression of spray pen is vivid, the description of objects is perfect and unique, the light and shade levels are delicate and natural, and the colors are soft. With the rapid development of science and technology, the pigments used in pen spray are increasingly diversified and specialized. Pen spray is used more and more widely. He has dabbled in various fields related to beautifying people's lives, and his works have obvious performances in art halls, advertising posters, commercial illustrations, cover design, advertising photography, calendars, paintings, architectural paintings, comprehensive paintings, makeup, temporary tattoos and so on. As a compulsory course in art colleges, pen-spraying technology has become a powerful expression technique in art modeling.