This series of products have high precision, higher hardness, higher pressure resistance and higher temperature resistance, using German manufacturing technology and production equipment, very suitable for all kinds of airflow drying system and air knife drying system, widely used in ultrasonic cleaning, glass cleaning machines, circuit boards, electroplating parts, coating, coating, non-ferrous metal plate/wire/sheet production processes, such as water drying, also can be used for hazardous gases, dust, hot and cold air barrier-free isolation, printing paper on the blowing paper and, after printing drying, food, medicine, rapid heating, thawing and high temperature sterilization