Product Description: Made of tungsten steel, it has a hard texture and is not easy to deform and wear. The stainless steel inner liner is designed with vacuum, and the surface of the liner is equipped with electrolytic grinding technology to prevent dirt from generating insulation effect. The sealing ring is used for 6 hours above 50 ℃ and 12 hours above 40 ℃, and the edge is made of food grade PP material. The surface of the healthy and worry free inner liner is equipped with electrolytic grinding technology to prevent dirt from generating cup covers and plugs, with good sealing performance and no dripping; The fine mesh tea grid design is convenient for reference and cleaning. Double cup combinations with different capacities are suitable for different occasions