BEIJING, June 7 (Reuters) - Copper prices in London slipped on Wednesday after data showing lower than expected Chinese exports in May, though a weaker dollar and hopes of more economic stimulus in China lent some support.

Three-month copper on the London Metal Exchange was down 0.4% at $8,310 a tonne by 0714 GMT while the most-traded July copper contract on the Shanghai Futures Exchange was up 0.1% at 66,540 yuan ($9,335.67).

China's May exports fell more than expected year on year, indicating faltering global demand, while imports contracted at a slower pace, customs data showed on Wednesday.

The country's imports of unwrought copper and copper products in the first five months of the year fell 11% to 2.14 million tonnes, the data showed.

The drop in imports contributed to a tight market as demand improved after buyers benefited from recent price falls.

Market participants expect a less tight market this month, with some large smelters resuming production after maintenance.

Analysts at CITIC Futures pointed out a 70,000 tonnes supply gap in the refined copper market last month.

However, supply tightness is expected is to ease with rising copper ore and concentrate stocks at ports, said analysts at5 Guotai Junan.

Sentiment was bolstered, meanwhile, by hopes for more stimulus in the property sector. That improves the demand outlook because construction is the main consumer of most industrial metals.

The U.S. dollar dipped on Wednesday, making dollar-priced commodities more attractive for buyers with other currencies.

Among other metals, LME aluminium rose 0.3% to $2,216.50 a tonne, tin retreated by 0.3% to $25,535, zinc was up 0.8% at $2,337, lead gained 0.4% to $2,034 and nickel held steady at $20,975.

SHFE aluminium was little changed at 18,105 yuan a tonne, zinc added 1.2% to 19,560 yuan, lead rose 0.7% to 15,165 yuan, nickel was up 0.1% at 159,090 yuan and tin dipped 0.1% to 208,500 yuan.

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($1 = 7.1275 Chinese yuan renminbi) (Reporting by Siyi Liu and Dominique Patton Editing by David Goodman )