Reports that from steel to oil to cars to credit cards, China is poised to become the world's biggest producer and market for many goods and services. Concern among some foreign business executives and appeal to others, depending on whether they see the country as a competitor, a cheap source of supply, a market, or all three; Pressure at companies across many industries to match prices available in China or lose their customers; Impact of deep price cuts, including job losses, cutbacks, and even closings; Decision by some American and European countries to move some of their operations to China, taking advantage of the country's vast and inexpensive labor force.