Sioux state specialized in the production of various types of car seals, mechanical seals, electrical seals, building seals, doors and windows seals, pvc seals, tri-dollar baci seals, silicon rubber seals, elastic seals, flame-retarded seals, ship seals, sponge seals, tri-dollar acetate cotton (blowing) rubber seals, tri-spong-chip seals, four-complex seals。