What is the standard for acupuncture non-woven carpets?

What is the standard for acupuncture non-woven carpets? The exhibition carpet is a blanket with a certain hardness made of synthetic fiber through acupuncture process and then made of adhesive invasion. General width is 1-4 M, length 60-90 m. The earliest is the court special items, but also high-end luxury goods. The exhibition carpet is made of short fibers through different equipment and processes, and different fibers are interwoven with each other through acupuncture and other processes to make the fabric standardized, make the fabric soft, plump, thick and stiff to meet the use requirements with different thicknesses. The needle-punched gray cloth is then glued on the back, dried and shaped, cut and wrapped in rolls. There is no so-called standard, usually take care of yourself.