SHANGHAI  The cost of doing business in China is going up.

Coastal factories are increasing hourly payments to workers. Local governments are raising minimum wage standards. And if China allows its currency, the renminbi, to appreciate against the United States dollar later this year, as many economists are predicting, the relative cost of manufacturing in China will almost certainly rise.

The salaries of factory workers in China are still low compared to those in the United States and Europe: the hourly wage in southern China is only about 75 cents an hour. But economists say wage increases here will eventually ripple through the global economy, driving up the prices of goods as diverse as T-shirts, sneakers, computer servers and smartphones.

“For a long time, China has been the anchor of global disinflation,” said Dong Tao, an economist at Credit Suisse, referring to how the two-decade-long shift to manufacturing in China helped many global companies lower costs and prices. “But this may be the beginning of the end of an era.”

The shift was illustrated Sunday, when Foxconn Technology, one of the world’s largest contract electronics manufacturers and the maker of well-known products that include Apple iPhones and Dell computer parts, said that it was planning to double the salaries of many of its 800,000 workers in China, beginning in October. The new monthly average would be 2,000 renminbi  about $300, at current exchange rates.