On March 12th, Beijing issued an orange warning of heavy pollution of the air. The smog that had been left for a long time was once again hit, which also caused many people to smash the soil filled with air purifiers in their homes.
Since the beginning of the heating season in 2017, people in the first level of smog have waited for an event. As the government's efforts to control PM2.5 have increased, and the smog has decreased, the air purifiers that used to be strong in the past have been somewhat embarrassing in 2017.
According to the data from Ovi Cloud, the sales volume of air purifiers in 2017 was only 7.25 million units. Zhongyikang data pointed out that in the last four weeks of 2017, the net retail sales volume fell sharply year-on-year, with the largest drop of nearly 80%. How can such a cliff-like decline be embarrassing, and even worry about whether the empty net market will gradually shrink.
However, under this circumstance, Zhongyikang actually made a "new outbreak" forecast for the empty net market in 2018. It pointed out that the overall sales volume of the net market in 2018 is expected to reach 28.9 billion, with a compound growth rate of over 40%. Many people can't help but ask what exactly supports such "bold" predictions.
This must be discussed from the root cause of empty net products. As we all know, air purifiers are all closely related to the frequent smog in China. But does this mean that when the smog "cannot move the knife", the empty situation will become embarrassing?
Obviously not. In 2017, the relevant person in charge of the 352 air purifier company, who had rushed into the air, said that it is a natural process that the air is getting better. No one wants the air to get worse. Empty net is a product that came into being to solve the problem of consumer air, but it is not only a solution to the problem of smog.
It is understood that the market penetration rate of air purifiers in the United States has reached 20%-30%. In contrast, even though smog has caused a net increase in China's net sales, in China, the market penetration rate of air purifiers is still low. Peng Yi, deputy director of Zhongyikang, also clearly pointed out that the Chinese air purifier market is still in its infancy.
There is no smog in the United States, but the net penetration rate is higher than that of China, which undoubtedly opens another window for China’s net market. It should be known that smog is only one of the sources of indoor air pollution, in addition to benzene, formaldehyde, microorganisms, bacteria, viruses, etc., which will pose a threat to human health. Therefore, the relevant person in charge of 352 said that with the improvement of people's living standards and the pursuit of health, there is still a broad market for empty nets, such as spring pollen, animal hair, secondhand smoke, bacteria and flu viruses, etc., which will become Purification object of the purifier. Industry economic observer and chief editor of Nail Technology Ding Shaozhi also pointed out that the awakening of health awareness will make consumers' dependence on empty net products stronger and stronger.
In addition, as mentioned in the 13th Five-Year Plan, during the 13th Five-Year Plan period, China will build a well-off society in an all-round way, and the per capita national income will also be at the middle of the world's middle income level. With the increase in income, the consumption structure of urban and rural residents will transition to a higher level, and the requirements for clean air, water and other resources and environment will only be higher and higher.
Based on the above two points, whether the smog is frequently related to the level of empty net sales is also the main reason why Zhongyi Kang dares to predict that the new "outbreak year" will be ushered in in 2018.
In fact, as far as the manufacturers are concerned, they have already been eyeing the huge net of growth. At the capital level, in 2017, 352 Environmental Technology announced that it had obtained financing of over RMB 200 million, which is by far the largest financing in the domestic net space sector. In addition, as far as the brand is concerned, new recruits are in constant stream. Under the premise of the traditional net appliance giants such as Midea, Gree, Sharp and Panasonic in the air-net industry, in 2017, a large number of Internet companies such as Netease's strict selection, ink weather, and hammers took a share. At the product level, people have already begun to work hard to explore products that combine multiple functions, such as Dyson's air purifiers, which can remove allergens at home while removing smog; and 352, different for Chinese families. Filter cartridges with different effects have been introduced for demand.
The smog frequently makes the empty net mites function to stand firmly in the C position, and the diversified functions such as formaldehyde, odor removal, sterilization, humidification and purification are gradually starting to rise. However, in order to get rid of the embarrassing situation of relying on the heavens, the empty net not only requires Chinese-style guidance and education for consumers, but also needs to intensify innovation. It is believed that with the increase of new demand, a new round of industry reshuffle will also begin. (å´éœ„ç’‡)
Piezoelectric Discs For Flowmeter Sensor
Piezoelectric ceramic disc
Quick delivery
High performance
Application: flow meter measurement
There are many kinds of USF used in closed pipeline according to the measuring principle, and the most commonly used are propagation time method and Doppler method. Among them, time difference ultrasonic flowmeter is used to measure fluid flow by the principle that the time difference of sound wave propagating downstream and countercurrent is proportional to the velocity of fluid flow. It is widely used in raw water measurement of rivers, rivers and reservoirs, process flow detection of petrochemical products, water consumption measurement of production process and other fields. According to practical application, time-difference ultrasonic flowmeter can be divided into portable time-difference ultrasonic flowmeter, fixed time-difference ultrasonic flowmeter and time-difference gas ultrasonic flowmeter.
Ultrasonic flow-meters use at least two transducers aligned so that ultrasonic pulses travel across the flow of liquid or gas in a pipe at a known angle to the flow.
Technical data:
Electromechanical coupling coefficient Kp: > 0.62
Dielectric Loss tg δ: <2%
Nominal Piezo discs for ultrasonic flowmeter:
OD14.2*1MHz PZT-51
OD14.6*1MHz PZT-51
OD15*1MHz PSnN-5
OD15*2MHz PSnN-5
OD20*1MHz PSnN-5OD20*2MHz PSnN-5
OD15*1MHz PZT-51
OD15*2MHz PZT-51
OD20*1MHz PZT-51OD20*2MHz PZT-51
Size, Frequency and Electrode on request.
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