Shenzhen City In The South China Sea Science

Shenzhen city in the South China Sea Science and technology limited company is committed to environmental protection, energy-saving, intelligent technology development, sales. The main products of the company include: the world's first environmental protection self-cleaning intelligent teaching board, reusable ink pen, environmental non-toxic harmless derived from plants for the hydrolysis of environmental protection ink, environmental protection blackboard eraser, as well as USB, VGA, network interface, and can be connected with the projector, optical electronic interactive control system. Pr