TIANJIN -- Deals for 19 projects involving a total investment of 4.9 billion yuan ($673 million) were signed Tuesday at a cross-Strait trade fair in North China's port city of Tianjin.

The four-day Tianjin-Taiwan trade fair attracted about 300 people from Taiwan, including officials and entrepreneurs, with an aim to build an investment platform for Taiwan enterprises and promote cross-Strait economic and trade exchanges.

"The mainland is the 'world's factory' and the 'world's market.' Its purchasing power is great. I am very confident in the mainland market and will continue to invest in the future," said Jason Han, vice president of Dachan Greatwall Group, one of the companies from Taiwan which inked business projects.

Tianjin stands as an important investment hub for Taiwan-funded enterprises in the northern region of the mainland. With over 2,600 Taiwan-funded companies established, the total contractual investment has exceeded $18.1 billion.