The most-active September copper contract on the Shanghai Futures Exchange fell to a session low of 69,530 yuan earlier in the session before paring losses and edging up 0.03 percent to close at 69,880 yuan. "The Chinese were selling on the LME today but the Western investors were buying them up," said a Shanghai-based trader. ShFE copper stocks rose 9,297 tonnes to 90,089 according to data released on Friday.