U.S. crude futures inched up early on Friday but remained near 12-year lows as financial market unrest in China rattled investors already concerned about a world glut in oil. U.S. crude West Texas Intermediate (WTI) (CLc1) was trading 12 cents higher at $33.39 a barrel by 0028 GMT (1928 EDT) after settling at $33.27 on Thursday. “Oil remains under pressure amid concerns about China’s economy and yuan depreciation,” ANZ said in a note on Friday.