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California Air Resources Board, California's clean air agency, was formed in 1967 to be responsible for researching and establishing the state's vehicle emissions standards, attaining and maintaining healthy air quality; protecting the public from exposure to toxic air contaminants; and providing innovative and affordable approaches for complying with air pollution rules and regulations.

Calling China-Africa friendship the "precious wealth of both sides," Xi said that as stated at the 19th CPC National Congress, China will work with all countries to build a new type of international relations and a community with a shared future for humanity, and it will enhance unity and cooperation with developing countries, including African countries.

COMAC earlier said it would send six C919 aircraft on test flights, and complete more than 1,000 compliance tests. So far, two test aircraft have conducted their test flights.

Can an artist's hand be replaced by a robot's touch? "Let's wait and see," Jia said.

CHENGDU - Four years after being identified as female at birth, giant panda Pu Pu has actually been found to be male, according to the China Conservation and Research Center for the Giant Panda.