Tianjin, one of China's traditional industry bases in north China, has succeeded in upgrading technologies in most of its State-owned enterprises with overseas investment.

Tianjin has spent 46.44 billion yuan (about 5.6 billion US dollars) in this regard since mid-1980s. The city's industry has attracted 4.5 billion US dollars of overseas investment, more than 90 percent of which was used by traditional State-owned enterprises (SOEs).

Among Tianjin's 185 large and medium-sized key SOEs, 114 have introduced the company system. Tianjin now owns not only numerous large, competitive joint-ventures but also stock companies, and enterprises with investment from several sources.

Consequently, the industrial added value of the city's industrial sector has increased 37.62 billion yuan (about 4.5 billion US dollars) over the past six years.

The output value produced by backbone industries, represented by electronics, chemical industry, metallurgy, and mechanical industry, has made up 54 percent of the city's total.

The gross output of the high-tech industries such as new energy, new materials, electronic information, biomedicine, has risen to today's 17.5 percent of the city's industrial output value from five percent six years ago.