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Address: Social responsibility
On the Principle of Large-Caliber Smart Water Meters
Our company’s water meter series is a new type of wireless remote-control smart water meter, consisting of a meter base and a computer-based remote-control system. Using a handheld operator as the medium, various encrypted data are transmitted wirelessly from the handheld device to the smart water meter’s control system. The remote control system issues commands to open or close the valve. When a user’s water consumption falls below the preset threshold, the meter automatically triggers an alarm. An LCD display indicator prompts the user to purchase water. When water usage reaches zero, the valve automatically shuts off, thereby enabling prepaid control for industrial water meters and achieving the goal of “pay first, use water later.”
It overturns the traditional method of controlling water valves via mechanical switches, enabling low-power switching of large-diameter valves and putting an end to the fixed design of water meters and valves that has persisted for over 120 years. By integrating electronic information technology, it enables prepaid water usage, thus ushering in a new era for water meters.

This is the large-caliber smart water meter developed by Chengde Longzhida Intelligent Instruments & Meters Co., Ltd. Unlike products from other companies, our product boasts the following advantages: 1. In terms of performance: featuring a low-power design that conserves energy and ensures a long service life. 2. In terms of installation: it requires no external power supply and is extremely easy to install. 3. In terms of application: the management software offers powerful functionality and can be flexibly tailored to meet the needs of different users. This product has received widespread praise and acclaim from our customers. We will continue to repay our customers with even better service and higher-quality products.
Longzhida Company Successfully Hosted the Victory Parade Commemorating the War of Resistance.
Longzhida Company Successfully Hosted the Victory Parade Commemorating the War of Resistance.
Today is a day that every Chinese person should solemnly remember—the 80th anniversary of the victory of the Chinese People’s War of Resistance Against Japanese Aggression and the World Anti-Fascist War.
On July 2, Chengde Longzhida Company held a meeting with the Sino-German Institute. After thorough discussions between the two sides, Mr. Bai, General Manager of Longzhida Company, and the faculty team from the Sino-German Institute reached a consensus: Longzhida Company officially entrusted the Sino-German Institute to carry out the design and R&D work for a new type of ultrasonic water meter.
On May 30, Longzhida Company successfully held an exceptionally meaningful event titled “Welcoming the Eighth ‘National Science and Technology Workers’ Day’: Promoting the Spirit of Scientists.”