[Notes] <br>● Be careful not to touch the inside of the iron bottle directly. When washing inside the iron bottle, hold the water in hand and rinse with water. The use of detergents, polishing powder, metal brushes, etc. will cause the inside to become dirty, which is also forbidden because it also causes corrosion. <br>● Wipe the surface of the instrument with a cloth of wet cloth or tea juice to make it more elegant. Do not clean the surface with detergent or polishing powder, sewage, metal brush, etc. ● When you use it for the first time, please boil it in water and drop it again 2-3 times. <br>● After use, be sure to discharge hot water. Remove the cover and allow the air inside it to dry and clean. Especially in the case of iron bottles, do not put water in the iron bottle. <br>● From the beginning of use, usually in about 2 days to 1 week will appear red brown spots, and ultimately will be scattered throughout the surface, but because it is not rust, please use. (In the case of rust, hot water will turn red.) <br>● For long periods of time, reddish brown and white precipitates will stick to the inside, but do not remove them. <br>● Do not use water and other sudden cooling, please let it cool. <br>● For long-term use, please use the gas and the IH cooker and other heat and heat is lower than the medium heat.