In addition to the dummy variable expressions the influence of forms of ownership and geographical location, the coefficient estimates of the variable quymo is the biggest, for find GOV'T would have the scale grows more powerful and NSLĐ affect large businesses (review under the angle of revenue) are increasing mutual NSLĐ CNĐT industry. However, the major revenue is not synonymous with the totally dominate the market in the country due to many large businesses related to export activities and had never overwhelms the domestic consumption market of small businesses.
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