Business cards are exchanged after the initial introduction. Take an adequate supply of business cards with you if you have a meeting with Chinese people.
You'd better to have one side translated into Chinese. Make sure it uses "Simplified" characters for Mainland China,Singapore,MalaysiaandIndonesia, and "Traditional" characters inTaiwanandHong Kong.
Business cards should also include your title. If your company is the oldest or largest in your country, that fact should be shown on your cards as well.