China will put in place a unified gross domestic product (GDP) calculation system in 2019 that will see the National Bureau of Statistics (NBS) take over data collection responsibilities from local authorities.China will put in place a unified gross domestic product (GDP) calculation system in 2019 that will see the National Bureau of Statistics (NBS) take over data collection responsibilities from local authorities.China will put in place a unified gross domestic product (GDP) calculation system in 2019 that will see the National Bureau of Statistics (NBS) take over data collection responsibilities from local authorities.China will put in place a unified gross domestic product (GDP) calculation system in 2019 that will see the National Bureau of Statistics (NBS) take over data collection responsibilities from local authorities.China will put in place a unified gross domestic product (GDP) calculation system in 2019 that will see the National Bureau of Statistics (NBS) take over data collection responsibilities from local authorities.China will put in place a unified gross domestic product (GDP) calculation system in 2019 that will see the National Bureau of Statistics (NBS) take over data collection responsibilities from local authorities.