Please do not inject boiling water, as boiling water is prone to splashing out during water injection, posing a safety hazard; 2. The insulation duration is related to the environment, and the above insulation duration is for reference only; 3. The water injection volume should not exceed 2/3 of the capacity of the hot water bag, and the excess air should be discharged at the same time; 4. Ensure that the cover is tightened to prevent hot water from overflowing.
