In addition to the dummy variables affecting expression of the form of ownership and geographical location, the estimated coefficient of variation is the largest quymo, indicating that the scale enterprises bigger stronger impact on labor productivity and the enterprise large (the point of view of revenue) is increasing the overall labor productivity of the industry CNDT. However, strong revenue not entirely synonymous with the domestic market domination by many large enterprises related to export activities and therefore have not overwhelm domestic market share of small businesses.
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