It is suitable for all kinds of papermaking machines with speeds below 800, widths ranging from 0.75 meters to 4.6 meters, and square grams weighing 600 to 2500 grams per square. The specific product has a bottom net carpet, which is generally used for ordinary paper machines below 150 meters. High-line bottom-bottom net felt, mainly for medium and high-speed paper machines with speeds ranging from 150 meters to 400 meters, medium and high-grade paper products. Double-layer high-line bottom-bottom net felt for high-speed paper machines over 400 meters, medium and high-grade paper products, high demanding users. The product has the characteristics of stable performance, high wear resistance, good gas permeability and strong dehydration ability, and has won the trust of users. The single-layer, double-layer and multi-layer bottom net felts provided by the users are tailor-made to meet customer requirements.