What are the applicable scope of the calibration regulations for LNG mass flow meters and JJG liquefied natural gas dispensers

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1. What is the calibration process for liquefied natural gas dispensers under the JJG standard?

2. What is the scope of application of the JJG liquefied natural gas dispenser calibration regulations?

3. How much does one refueling equipment cost at a gas station in Shandong?

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