Dow Jones futures turned higher early Tuesday, as the stock market weakness continued after the Dow 30 found resistance at a key benchmark. Tesla stock rallied on strong China sales data Tuesday. X On Monday, the Dow Jones Industrial Average slid 0.7%. The S&P 500 also declined 0.7%, while the Nasdaq dropped 0.6% to end the session at day lows. Among the Dow Jones leaders , Apple ( AAPL ) lost just 0.1%, while Microsoft ( MSFT ) moved down 0.2% in today's stock market . American Express ( AXP ), Merck ( MRK ) and Salesforce.com ( CRM )…