Which brand is good small air compressor? Now there is an integrated air pressure system on the market, which is combined with variable frequency air pressure, module dryer and precision filter, which is more useful than the previous integrated air compressor or skid-mounted air compressor, dew point of compressed air can reach-40 degreesAsk for adoption as a satisfactory answer. There are many choices in China. small air compressors like fengjinba have a good reputation, oil-free design and wide use, spray painting, decoration, car repair, etc. can be used [Guangzhou Beiyue machinery] to answer for you: there are many brands of small air compressors now, the most host choice is suitable for yourself. where do you want to use it? Yan, Dragon mechanical and electrical air compressor has good performance, guaranteed quality and good after-sales service, which is worth a try. Hello, how small, about 3 P? our factory now uses 3 P of 220 v, Jaguar air compressor, which was bought in 'Jetta mechanical and electric

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What is the reason for the high ph value of biochemical water treatment hypoxia pool? The operation precautions of reverse osmosis device are as follows: (1) the hydrolysis of cellulose acetate membrane is easy to cause the performance of reverse osmosis device to deteriorate. For this reason, the pH value of water must be strictly controlled, and the pH value of water supply must be maintained at 5-6, and the composite film can be PH3-Run under the PH11 range.(2) when the amount of secondary sodium injection is insufficient and the free chlorine in the water supply cannot be measured, there will be sticky mud on the membrane assembly of the reverse osmosis device, and the pressure difference of the reverse osmosis device will increase.However, for composite films and polyamide films, the amount of free chlorine entering the membrane assembly must be strictly controlled, and exceeding the specified value will lead to oxidation and decomposition of the membrane.(3) if the water with the F1 value exceeding the