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FAQ for Learning More
Below are answers to some frequently asked questions. We hope they will be helpful to everyone.
1. Are those measuring instruments unsuitable for postal services?
Answer: Generally, glassware is not suitable for express delivery services because glassware is fragile and easily damaged.
2. What is measurement uncertainty?
Answer: Measurement uncertainty is a parameter that characterizes the spread of values reasonably attributed to the measured quantity and is associated with the measurement result.

3. Where should enterprises begin their energy metering efforts?
Answer: Energy measurement is an indispensable foundation and prerequisite for enterprise production and operational management. Since energy measurement covers every stage of the enterprise’s production process—from raw material procurement and transportation to handover, process control during production, and product shipment—each step requires measuring and controlling energy consumption. Without these measurement data, it would be impossible to quantify energy consumption at each stage of production.
4. How can enterprises carry out metrological traceability work for measuring instruments?
1. Send it to a qualified inspection agency for verification.
2. The enterprise’s internal metrology organization establishes metrological standards and conducts internal verification.
3. Achieve metrological traceability by using certified reference materials.
4. When traceability to the national primary standard is impossible or not feasible, traceability shall be established by reference to recognized physical standards or reference materials, or through comparative testing and participation in proficiency testing programs, among other means of providing evidence.
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.”