Crude oil is primarily used for two purposes: transportation fuel and as feedstock for the chemical industry. Even before the crisis, demand growth has been weak, particularly as transportation fuel in developed countries. But production has been surging, and amid ample and...
China began to implement China III, requiring that the OBD system shall be equipped to newly registered light-duty vehicles. In July 2008, China required compression ignition engines and gas fuel ignition engine vehicles to be equipped with the OBD system when they reached China IV emission levels...