An increase in the drop in front of the American stock plate

ON 16 JULY, THE U.S. OPTICAL DISK FELL BY 4.05 PER CENT, THE WESTERN DATA PLATE BY 6.61 PER CENT, THE HIGT TECHNOLOGY PLATE BY 5.42 PER CENT, THE FLASH DRIVE BY 6.69 PER CENT AND THE SK HERCULES PLATE BY 6.25 PER CENT。