First, surface type air, large air volume, no blowing sense. The fiber cloth air duct system adopts the unique surface air outlet mode of the whole pipe wall fiber permeating air and microporous jet. The air outlet area is large, the air volume is large, the wind speed is low, there is no sense of blowing, and the comfort is excellent. Second, the overall air supply is evenly distributed. The fiber cloth air duct is discharged through the fiber gap of the entire pipe wall or the designed multiple rows of holes with uniform distribution, and the air distribution is uniform at every point to achieve the truly ideal uniform overall air supply. Three, anti-condensation. The fiber cloth air duct penetrates cold air through the whole pipe wall fiber to form a cold air layer outside the pipe wall, so that there is almost no temperature difference between the inside and outside the pipe wall, and the condensation problem is completely solved. 4. Easy to clean and maintain, healthy and environmental protection. Because the fiber cloth air duct system is convenient to disassemble and assemble, it can be convenient to wipe and clean the pipeline, so as to improve the indoor air clean quality and meet the higher requirements for health and environmental protection. Fifth, beautiful high-grade, diverse colors, personalized outstanding. Six, light weight, roof load can be ignored. 7. The system runs quietly and improves the environmental quality. Eight, the installation is simple, shorten the project cycle. Nine, flexible installation, can be reused. Ten, the system cost saving, cost-effective.