Shares of the following companies may have unusual moves in Taiwan trading. Stock symbols are in parentheses and prices are as of the last close in Taipei.

The Taiex Index rose 57.20, or 0.7 percent, to 8,701.38.

China Steel Corp. (2002) (2002 TT): Taiwan’s largest maker of the metal has made a binding offer for Malaysia’s Lion Group assets including Amsteel Mills Bhd. and Megasteel Bhd., said two people with knowledge of the matter, who declined to be identified because the information is confidential. The deal may be valued at more than $1 billion, one person said. Steve Lee, a China Steel vice president, said the possible purchase is still under evaluation and declined to comment on whether the company has made a offer. The stock gained 1 percent to NT$30.40.

Far Eastern New Century Corp. (1402) (1402 TT): The textile company will raise workers’ salaries by 4 percent, Taiwan’s official Central News Agency reported, without saying where it got the information. The stock advanced 3.8 percent to NT$48.

Formosa Petrochemical Corp. (6505) (6505 TT): Taiwan’s only publicly traded oil refiner suspended export obligations on oil products from its Mailiao processing plant indefinitely following a fire at the site. The stock slumped 6.9 percent to NT$101.

Hon Hai Precision Industry Co. (2317 TT): Foxconn Technology Group, the world’s largest custom manufacturer of electronics, is committed to increasing investment in research and development and boosting the role of automation in manufacturing, the Taipei-based company said in an e-mailed statement yesterday. Foxconn has 10,000 robots currently and will replace some workers with one million robots within three years, Xinhua cited Gou as saying July 29. Hon Hai is a unit of Foxconn. The stock climbed 3.3 percent to NT$85.