Iwata Factory's shim plate has purchased several thicknesses such as brass, aluminum, etc. several times. About the quality, it is perfect. However, this time there is a problem with packing. There was a shim plate at the bottom of the cardboard box, but the face of the copper shim plate cured by one piece of cardboard paper faced upwards, 170 pieces of simultaneous order stainless steel nuts were placed in a plastic bag I was riding in. A copper plate with a thickness of 0.1 mm had several dozens of dents. It is commonplace. We use it by etching, but this can not be used for any purpose. It is not a level of carelessness. We strongly request future improvement of the packaging manual. Since the copper shim plate cured by one piece of corrugated cardboard in a plastic bag will be in the condition of being delivered by the manufacturer, please add a curing corrugated paper to the shim plate surface and sandwich it. Also, in the past, shim plate · aluminum was not curing, there were also some places of distortion in the shape of fingers. If it is abrasion it can be patient but the product of this hand is delicate. I want to deal with with extreme caution. I think that I would like to use it in the future, so thank you.