Sorry if this ever been brought up before. Recently ordered several packs of BG65 / 85 from www.hiquasports.com. Noticed that several packs of BG65, on the bottom left corner of front package, there's "SP" printed in white. Well, the rest of the packages seems not. So, is that the country code for string?
Yeah, I guess so, I have strings with SP or CH marks on them as well. Also, I guess if it's from Japan directly, there is no mark.