PH meters; digital pH meters; battery adapters; flash memory card adapters; wireless adapters for computers; telephone adapters; cable adapters; cable adapters [electric]; electrical adapters; ammeters; engine analyzers; computerized vehicle engine analyzers; electrical network analyzers; electric power analyzers; monitoring apparatus, other than for medical purposes; measuring, detecting, monitoring and controlling apparatus; signal transmission apparatus; acidimeters for batteries; balances...

Developing educational lesson plans for others in the field of childrens coloring books and workbooks; Publishing of books, magazines