Choshi Kurohae factory built in 2009 already had very effective packing systems superior to traditional Japanese systems. However, in the summer of 2012, we decided to renovate our technical base to provide more efficient manufacturing. As the result, material fish are transferred to renovated grading section with weight-checkers after sorted with roller grader. In this way fish are graded with up to 15 ranks. After that, they are packed to "SAMURAI" cartons, stacked to the racks and transferred to deep freezing room. It takes less than 3 or 5 minutes from coldwater to freezing room. Therefore, in organically combination with grading system and packing system, our plants have quite flexible systems fit in any fish and its condition which is changing by the minutes. This capability made us relieve bottlenecks and process them more effectively, carefully. This renovation is one of our answer for conflicting demands of our customers - higher grading accuracy without losing process speed.