Spatial spillover and synergetic promotion path of total factor productivity growth in China 并列题名：Spatial spillover and synergetic promotion path of total factor productivity growth in China Research on spatial imbalance and regional coordination of green total factor productivity growth in China 并列题名：Research on spatial imbalance and regional coordination of green total factor productivity growth in China Foreign direct investment and green total factor productivity growth in China Supporting policies and environmental total factor productivity growth