First of all, the explanation is also difficult to understand. Explanatory notes that you do not understand, whether figures and usage methods are written on the back of the product but are imported items. Since I did not know at the time of purchase in the catalog as well, when asking by telephone, there is no way the operator knows, because there are many handled items, it is told that the responsible person will be able to respond after 2 days, it is uneasy whether or not it can be used Purchase. It was just as useless ... and moreover, after FAX order "We raised price. I hear the purport of that. (I do not understand the meaning of the expiration date of the cover at all) It is very disappointing.