Technical staff Take out a piece of Shaft A section of the injection molding operation. The problem was due to the work that produced the problem then I bumped into a spiral ridge of the workpiece. Bring a specimen into the assembly to be compared with normal specimens. By a handful of pieces that finished inside the box and the Finish good rotation Shaft A completion assembly by removing him. To compare failure After the comparison is done. The piece employs technicians who have not passed the verification back down box packing. Without informing the responsible authorities.