First of all, it's important to consider the placement of a child’s seat and the height of their bed. While most tiles on the market emit radiation within safe limits, some imported materials may exceed these standards. To protect children, it's advisable to position their seating and beds at least one meter above the floor. For the seat, ensuring that the child’s head is above one meter in height is sufficient. This is because harmful substances released by ceramic tiles are denser than air, causing them to settle lower in the room. Just like how the air quality near the floor tends to be worse, placing children’s furniture higher can reduce exposure to these potentially dangerous particles. Secondly, many people use strong chemical cleaners to maintain tile surfaces. These solutions can be harmful in two ways. First, they may cause chemical reactions with the tiles, leading to discoloration and weakening the tile’s structure, which shortens its lifespan. Second, after cleaning, some fine powdery residues may remain on the surface—essentially acting as dust. Inhaling these particles can be harmful, especially if the tiles contain radioactive elements. When exposed to harsh chemicals, the radiation levels might even increase, posing additional health risks. Lastly, the waterproofing performance of tiles plays a significant role in both indoor environment and overall health. It’s not just about aesthetics; poor waterproofing can lead to moisture buildup, increasing indoor humidity. In hot and humid conditions, excessive moisture can cause discomfort such as internal heat stagnation or mold growth. Therefore, when choosing ceramic tiles, it's essential to prioritize health and safety first. Once the safety standards are met, you can then focus on style and color. Additionally, pay attention to the weight of the tiles—generally, heavier tiles indicate better quality and durability.
Electric valve is a device that drives the valve to open and close by electric motor. It is widely used in various industrial and civil fields, such as metallurgy, chemical industry, petroleum, natural gas, heating, ventilation and air conditioning, automatic control, etc. The following are some application scenarios of electric valves:
1. Fluid control in industrial production: electric valve can be used to control the flow, pressure and temperature of liquid, gas and steam to meet the needs of industrial production.
2. Oil and natural gas industry: electric valves can be used in oil and natural gas exploitation, processing, transmission and storage to control flow and pressure and ensure production safety and efficiency.
3. Chemical industry: electric valve can be used for fluid control in chemical production, such as acid-base solution, gas and liquid reactant control, to ensure the safety and efficiency of production.
4. Heating, ventilation and air conditioning system: the electric valve can be used to control the water flow, air flow and temperature in the heating, ventilation and air conditioning system to meet the requirements of the indoor environment.
5. Automatic control system: electric valve can be used with automatic control system to realize automatic control and adjustment of fluid flow, pressure, temperature and other parameters.
In short, electric valves are widely used in industrial and civil fields, which can improve production efficiency, ensure product quality and improve production safety.
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