Place of Origin:Canada system for improving sound of accoustic instruments ...
ron,s guitars [Sports & Entertainment] [Musical Instrument]
Explore the basic characteristic of sound. By means of interesting experiments, to let children understand how sound generates and transmitting. Understand sound has volume and pitch difference. Enjoy having ones idea put into action and represented by actual product. Knowing ...
Tron Link Technology Co., Ltd. [Electronic Components & Supplies] [Active Components]