Taiwan is manufactured and produced in the ground. The inside and outside of the straw are ground and polished. The surface is sterilized by high-temperature sterilization with medical grade passivation. No toxic substances remain. It can be washed with a special cleaning brush. Peace of mind features: 1. It adopts Japanese imported steel "SUS304, 18/8 food grade stainless steel" which is better in acid resistance, weak alkali resistance and corrosion resistance. 2. The medical product grade production procedure is tested by the international eight-metal acetic acid of the international SGS. Product content: 304 stainless steel straw x1 Straw cleaning brush x1 304 stainless steel (thin) straw introduction: Brand Country - Taiwan Manufacturing Origin - Taiwan Product material - SUS304 food grade stainless steel, 8/8 (18% chromium + 8% nickel) Product size - 20 x 0.62 cm Product weight - 15g other instructions: Cleaning and preservation 1. After use, brush with water and a straw brush. After washing, please dry and store. 2. For the first time, it can be washed with edible vinegar and cleaning solution. 3. Can be disinfected with hot water, please pay attention to the temperature and take it carefully. 4. Do not put in the oven to avoid heat and discoloration. 5. Do not use a melon cloth or a steel brush... to brush it, so as not to damage the material. Precautions: 1. Iced drinks and warm drinks are suitable. To avoid burns, please cool the hot drinks to the temperature. 2. It is recommended to use children over the age of 3, and please teach children to use, do not let young children use alone. 3. Safety considerations, no oblique design, please use the angled oblique insertion or small tear sealing of the beverage sealing film.