The Foil Electroscope is an scientific instrument that is used to detect the presence and magnitude of electric charge on a body. For recognition and understanding of electric charge in physics class.Teaching Equipment for students and kids.
Snail UKS-212 is Soprano Mahogany Ukulele,a beginner ukulele,with a soprano ukulele Gig Bag, which in a rich, feature with red tortoise binding and rosette.diecast gear,ebony fingerboard and bridge,satin finish with bright.
PTFE (polytetrafluoroethylene, also known as the king of plastics, Teflon) is the largest number of fluoroplastics, with aging resistance, high insulation, high lubrication, non stick and non-toxic. It is widely used in mechanical equipment, electronic pr
Agricultural belt feature simple structure, easy production ,smooth transmission, small mechanical vibration, wide applicability and convenient maintenance.