The Company would like to inform you of the need to charge a minimum standard of service transported a total of 80% of the booking amount, which accounted for 12,800 tons (16,000 * 80/100).
The company will inform you whether to charge a minimum standard of service chain is the number of 80% of booking, which I think is the 12 800, tons. (16 000 *, 80 / 100).