China's Sinopec will invest $2.2 billion in Devon Energy.
US top diplomat for Asia to visit China on Tuesday for talks which will include developments in DPRK.
The two sides agree to carry out in 2012 the important consensus reached between the two countries.
US Assistant Secretary for East Asian and Pacific Affairs Kurt Campbell will visit China, ROK and Japan next week in the wake of the death of Kim Jong-il.
Washington's decision not to name China as a currency manipulator is expected to reduce Sino-US trade frictions triggered by the exchange-rate issue.
China's Ministry of Commerce said Wednesday it will extend an anti-dumping investigation into US exports of a certain kind of animal feed for another six months.
The US Treasury Department declined to name China as a currency manipulator.
The first "US Chinese New Year Gala" will be staged in New York's Hammerstein Ballroom during the Lantern Festival in early February 2012.
Hoku Corporation started production of polysilicon as the first project after a majority of the company was purchased by a Chinese firm.
China has urged US to stop imposing countervailing duties on Chinese products while refusing to recognize China's market economy status.
A charity show in Pasadena, California is supposed to raise $50,000 in order to send 50 children with heart disease from Tibet to Beijing for treatment.
US energy company ConocoPhillips on Wednesday again promised to offer compensation for damages caused by oil spills at its two platforms off China's northeast coast, but the company refrained from offering more details.