The product liner, outer shell and stainless steel accessories in direct contact with liquid (food). The stainless steel type and grade of the material are austenitic stainless steel 06Cr19Ni10 For food contact Some plastic parts in direct contact with liquid (food): PP for food Paint: special paint, spray paint process Sealing ring: Use high sealing silicone ring, safe and water-proof Implementation standard: GB/T 29606-2013 "Stainless Steel Vacuum Cup" Quality level: qualified product Insulation efficiency At an indoor temperature of 20±5℃, pour hot water above 95±1℃ into the cup and tighten the lid at the lower end of the sealing cap (plug). After leaving it for 12 hours, the water temperature will be ≥46℃