The technological advances to sorting and packing are significant as well. In the early days, apples were sorted and packed by hand, usually right at the orchard. Now sorting and packing are high-tech operations. The main sorting and packing company in the Okanagan Valley is the BC Fruit Packers Cooperative (BCFPC) in Kelowna and Summerland. Two-thirds of all Okanagan apples are now sorted and packed by the BCFPC. Apples are mechanically sorted for colour, size, and grade. A computer judges the redness of the apple. The redder the apple, the better the grade. Apples with little colour are separated from those with more colour. A mechanized conveyor belt also sorts the apples by size. A combination of humans and machines sort the apples into grades: extra fancy, fancy, C grades, and culls. The lower grades are made into juices and other prepared foods. The fancier grades are sold in the Okanagan Valley and around the world as fresh apples. After all the sorting is done, workers at the packing house place the apples onto corrugated cardboard trays that are then put into boxes for shipping. On one busy day at the BCFPC packing house in Kelowna, the workers sorted and packed 10,000 forty-pound (18-kilogram) boxes, or over 400,000 pounds (181,440 kilograms) of apples!