Maintenance methods:

　　1, when not in use for a long time, the tank should be kept dry.

　　The production of 2, in order to prevent the smell and stains, please clean and dry after use.

　　After 3, due to the use of clean water will rust like a red spot, can use warm water with diluted vinegar soak 30 minutes, wash

　　Which enable several big recognition method

　　Several the following methods:

　　1, vacuum keep-warm glass performance simple identification method: pour boiling water into keep-warm glass clockwise to tighten the cork or lid within 2-3 minutes with the hand touch the cup outside surface, if there is a obvious phenomenon of warm cup body, the product has lost vacuum degree, cannot achieve good heat preservation effect.

　　2, sealing performance recognition method: after a cup of water, tighten the cork and lid clockwise, put the cup on the desktop, should be no water leakage; Close the lid and screw should be flexible, no gaps.

　　3, plastic accessories identification method: the characteristics of the new food-grade plastic smell is small, the surface light, no burr, long service life is not easy to aging. Ordinary plastic or recycled plastic smell great, colour and lustre is the feature of gray, burr, plastic aging more easy to fracture.

　　4, capacity, simple and easy method of identification, the depth of the tank and the height of the casing, (16 to 18 mm) capacity consistent with nominal value. Some poor quality of vacuum in the cup to add sand, concrete to compensate for the loss of weight. Myth: a cup (pot) heavier is not necessarily good.

　　5 simple identification method, stainless steel material: stainless steel material specifications, 18/8 said the stainless steel material composition containing 18% chromium, nickel containing 8%, achieve this standard material, accord with national food grade standards are green environmental protection product, the product rust and corrosion resistance. Ordinary stainless steel cup body rendering Bai Hefa dark hair color, if in a concentration of 1% saline soak after 24 hours can produce rusty spot, its part of the element to exceed bid, directly endanger human body health.