Updated at 5.22pm, Tuesday: A Shanghai agency that brokers hi-tech property rights swaps will open three offices in the United States to expand its marketing network, China's Jiefang Daily reported on Tuesday. The newspaper said the Shanghai Technological Property Rights Exchange would open offices in New York City's Empire State Building, within the California State University system and in Silicon Valley. The US centres will provide information on hi-tech property resources, and the company plans to list stocks on US technology exchanges, the Shanghai-based paper said. The Shanghai Technological Property Rights Exchange is a big player in China, where it offers a business Web site called saviaq.com. It is linked with 10 overseas exchanges in the US, the UK and Japan via Internet to share information. The exchange also is seeking links with exchanges in Australia and Malaysia, the newspaper reported. Shanghai Technological Property Rights Exchange has posted more than 100 hi-tech projects on the US-based Chinaonline.com. The projects are open to overseas bidding or investment, the newspaper reported. The exchange meanwhile operates 25 branches in 23 Chinese provinces and has reported hi-tech properties rights trading worth 30 billion yuan, according to Jiefang Daily.