At present, industrial ceramics play an irreplaceable role in the field of filament yarns production. Materials such as alumina ceramics are currently the best choice for filament yarn guides due to their high wear resistance. In the specific application process, for different specifications of yarn, ceramic surface roughness and surface treatment process will have different requirements to achieve the best use effect. Based on our years of practical experience, we can provide professional suggestions on mirror treatment and low friction treatment of products, even accurate to the specific roughness value, according to the actual requirements of customers. As for the air jet, our production suggestions can cover all the requirements of insert aperture selection, knot fastness, knot number, etc. If customers have production requirements for special yarns, we can also cooperate with customers to customize special-shaped jet insert that meet the requirements.