The old driver of the television circle started the online purchase of television shelters

The rise of online shopping has undoubtedly made life much easier for people. The vast selection of products available online allows individuals to choose based on their preferences, and the prices are often more affordable than traditional stores. However, like everything else, online shopping has its drawbacks, particularly when purchasing large items like televisions. First off, the quality of a TV is subjective and largely depends on personal experience. Unlike physical stores where you can see and touch the product, online shopping leaves you blind to what you're buying. Some unscrupulous sellers exaggerate their products online, only to deliver something entirely different. Additionally, TVs are delicate appliances that can easily get damaged during shipping. Returning them, especially bulky items like TVs, can be a logistical nightmare. Despite these challenges, we shouldn't let these potential pitfalls deter us from shopping online altogether. As someone who’s been researching TVs for years, I’d like to share my insights on how to navigate the online TV-buying process successfully. To begin with, it's essential to familiarize yourself with some basic TV technology. Currently, TVs fall into two main categories: OLED and LCD. OLED TVs have gained popularity recently due to their self-lit screens, offering superior contrast ratios and deep blacks. However, they come with significant downsides: high costs, low yields, and shorter lifespans, sometimes suffering from burn-in issues. Be cautious of aggressive marketing; don’t jump blindly into choosing an OLED TV. Quantum-dot TVs are another product frequently promoted by sellers, though technically, they are still a form of LCD TVs with modified backlights using inorganic nanocrystals to produce a wider color gamut. While they might appear competitive price-wise with OLED TVs, most models on the market today rely on quantum dot films attached to the backlight, making them more of an enhanced version of LCD TVs rather than true quantum-dot technology. In addition to quantum-dot innovations, several manufacturers have improved upon LCD technology. Hisense’s ULED technology, for instance, stands out by dividing the LED backlight into independently controlled zones, allowing automatic adjustments based on the brightness and darkness of each scene. This results in sharper contrasts and better visuals overall. Hisense’s "Full HDR" further enhances the dynamic range, ensuring a more vivid picture compared to standard HDR. After understanding these technical aspects, it's crucial to consider the brand and the reputation of the manufacturer. Hisense, a leading domestic TV brand, consistently ranks high in various metrics. According to IHS data from Q1 2017, Hisense holds a strong position in global 4K, curved-screen, and smart TV markets. Their average TV size shipped this year was 46.9 inches, with an average product price of $431, placing them just behind Sony and Samsung. If you're looking for a recommendation, I would strongly suggest Hisense EC880. This model, built on ULED technology, offers exceptional picture quality along with impressive performance specs. Equipped with a quad-core MA938 processor and 32GB of storage paired with 3GB of RAM, it outperforms its competitors significantly. Hisense EC880 is a solid investment—offering both top-tier image quality and excellent value for money. For those wary of online shopping pitfalls, Hisense EC880 is a reliable choice. Furthermore, as part of a promotional event on August 8th, the official Hisense flagship store offered discounts, making it even more appealing. For additional resources regarding smart TVs and streaming devices, check out Smart TV Information Network Sofa Butler (http://), a prominent platform for TV box and smart TV enthusiasts. They provide comprehensive information on smart TV boxes, software, and related queries.

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-5

OD20*2MHz PSnN-5

OD15*1MHz PZT-51

OD15*2MHz PZT-51

OD20*1MHz PZT-51

OD20*2MHz PZT-51

Size, Frequency and Electrode on request.


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Piezoelectric Ceramic Disc,Piezoelectric Disk Flow Meter,Piezoelectric Flow Sensor,Piezo Discs Flowmeter

Zibo Yuhai Electronic Ceramic Co., Ltd. , https://www.yhpiezo.com