Aug 31 (Reuters) - London aluminium prices were on track for their seventh straight month of gains as output curbs in China raised supply disruption concerns.

Prices of aluminium have been supported by production curbs in key Chinese smelting regions — often aimed at easing the strain on the power grid — sparking fears of tight supply.

Three-month aluminium on the London Metal Exchange advanced 1.9% to $2,700.50 a tonne by 0310 GMT, up 4.3% on a monthly basis. The contract hit its highest since April 2018 of $2,716 a tonne earlier in the session.

The most-traded October aluminium contract on the Shanghai Futures Exchange increased 0.6% to 21,275 yuan ($3,288.91) a tonne, hovering near its highest since August 2008 of 21,550 yuan a tonne hit in the previous session.

The China Nonferrous Metals Industry Association held a meeting of the country's top aluminium smelters on Monday to address what it described as an "irrational surge" in aluminium prices.

FUNDAMENTALS

* The LME cash aluminium contract was last trading at a premium of $25.75 a tonne to the three-month contract , its biggest since July 2018, indicating tightening nearby supplies.

* One party controls 50%-80% of available aluminium stocks and short-term futures on the LME, exchange data showed. <0#LME-WHT>

* A union at BHP's Cerro Colorado copper mine in Chile voted to reject the company's latest contract offer, paving the way for a potential strike at the small operation.

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MARKETS NEWS

* Asia stock markets opened lower despite fresh all-time highs on Wall Street, as worries about China's slowing economic growth and regulatory changes weighed on investor sentiment.

DATA/EVENTS (GMT)

0645 France GDP QQ Final Q2

0645 France CPI (EU Norm) Prelim YY Aug

0755 Germany Unemployment Chg, Rate SA Aug

0900 EU HICP Flash YY Aug

0900 EU HICP-X F&E Flash YY Aug

1400 US Consumer Confidence Aug ($1 = 6.4687 yuan) (Reporting by Mai Nguyen in Hanoi; Editing by Shounak Dasgupta)