The Aluminum Corporation of China Ltd said its net profit in the first half reached 412.58 million yuan ($64.47 million), down 22.24 percent year-on-year.
China Petroleum and Chemical Corporation (Sinopec), the country's largest oil refiner, said on Sunday its net profits for the first half of the year rose 11.9 percent year-on-year to 41.17 billion yuan.
Siemens AG is promoting its ideas on saving energy in up to 100 Chinese cities as the nation plans to cut energy consumption in the industrial sector by 16 percent over the next five years.
Despite concerns that Volvo Car Corp's sales could tumble after its purchase by Zhejiang Geely Holding Group Co last August, the Swedish brand has registered solid growth.
Chinese car and battery manufacturer BYD Co is reporting an 89 percent fall in first-half net income due to sluggish sales.
Among Motorola Mobility Holdings Inc's more than 17,000 patents, a group of 18 may prove most useful in Google Inc's effort to fend off litigation targeting the Android mobile platform.
Top Chinese automaker SAIC Motor Corp reported a 46.1 percent gain in its first-half earnings thanks to brisk sales of Buick and Passat models made at its Shanghai ventures.
Poly Real Estate Group Co, the country's second-largest developer by market value, said on Sunday its first-half net profits surged 71.7 percent year-on-year to 2.8 billion yuan ($437.5 million).
More oil has been detected near the two leaking oil platforms in Northeast China's Bohai Bay, authorities said.
Trinity Ltd will add 50 stores in China in the second half as the luxury menswear retailer taps rising consumer spending.
Metso Corp, the Finnish supplier of services in the pulp and paper industries, will shift its focus in China from production to services in the next 10 years.
One of Europe's largest private equity companies is set to enter the Chinese market.