Cotton:  Net sales of 624,200 RB--a marketing-year high--for delivery in 2009/10 was up noticeably from the previous week and from the prior 4-week average.  Increases were reported for China (533,400 RB), Mexico (32,400 RB), Turkey (18,900 RB), Taiwan (13,800 RB, including 200 RB switched from Turkey), and Thailand (12,300 RB, including 400 RB switched from Japan).  Decreases were reported for South Korea (6,100 RB) and Vietnam (5,900 RB).  Net sales of 198,700 RB for delivery in 2010/11 were mainly for Vietnam (63,900 RB), China (51,100 RB), and Mexico (35,100 RB).  Exports for own account were reported for China (16,000 RB).  Exports of 225,700 RB were down 31 percent from the previous week and 21 percent from the prior 4-week average.  The primary destinations were China (113,100 RB), Turkey (26,100 RB), Mexico (14,900 RB), Thailand (9,800 RB), South Korea (8,800 RB), and Indonesia (8,600 RB).  Net American Pima sales of 300 RB--a marketing-year low--were down 76 percent from the previous week and 87 percent from the prior 4-week average.  Increases were reported for Pakistan (200 RB) and Bangladesh (100 RB).  Net sales of 900 RB for delivery in 2010/11 were for Germany.  Exports of 1,900 RB--a marketing-year low--for delivery in 2009/10 were down 56 percent from the previous week and 57 percent from the prior 4-week average.  The primary destinations were Pakistan (800 RB), India (400 RB), and China (400 RB).