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Which is better, 203 or 204?

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1 and 203 are national metrology reference laboratory, national aerospace information technology industry metrology testing center, Beidou satellite navigation product quality testing center and military testing instrument testing institutions, and have the calibration/testing capability of 3 1 1 recognized by national, national defense and military laboratories.

2.204 is engaged in the research and development of crystal components, frequency sources, atomic frequency standards and time-frequency system full-chain technical products, forming a complete industrial layout of "punctuality, timing and time use".