Industrial scale.With the advantage of larger industrial scale,
the sector has a better developed foundation and also has
the ability to achieve scale economy. This study selected
two indicators to evaluate industrial scale of each sector:
industrial expansion coefficient and market competition.
The former indicator refers to the proportion of this sector’s
industrial added value to all sectors’ industrial added
value in Shunyi. The later indicator refers to the proportion
of this sector’s yield to the gross yield of this sector in
Beijing.