How about the front filter of the elevation lq1-10a? 1. the front filter is of course useful.Because the worse the water quality,The greater the role of the front filter.Because the function of the front filter is the preliminary filtration of the whole house water,It is mainly to filter the sediment, rust, and large particles in the pipe network.At present, the phenomenon of secondary pollution of tap water pipes is relatively serious,The tap water goes through the water pipe and there will be many impurities in our home,Filter out these impurities,Can avoid damage to the human body and skin,It can also protect the water purifier, water heater, shower, faucet and other facilities in the home.2. the front filter is the first coarse filter equipment for the whole house water,Can filter the sediment in tap water,Rust,Large particles.The front filter is generally installed at the front end of the pipe,So to 'front' two words to name;And 'filter ',It refers to the basic principles of such equipment.It is usuall
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Basic knowledge of junior high school 1. chemistry is an experiment-based natural science that studies the composition, structure, nature and change laws of substances.What physics and chemistry have in common: natural science based on experiments.2. the fundamental difference between chemical change and physical change is whether there are any new substances.Some phenomena such as heat release, light emission, discoloration, gas release and precipitation occur in chemical changes.3. physical properties--State, odor, melting point, boiling point, hardness, density, extensibility, solubility, volatility, conductivity, adsorption, etc.4. chemical properties--Oxidation, reduction, metal activity, activity, stability, corrosiveness, toxicity, etc.5. after heating th