About This

• K9 crystal
• -- a necessary equipment for science class of kindergarten, primary school , junior high school and high school.
• Dichroic glass-- children can get the initial experience of the refraction of light perception and stimulate their curiosity.
• Crystal-- can be used as teaching tools or research tools and decorations.
• Crystal -- it may improve children's interest of natural light and help them to discover some interesting phenomena.
• Crystal pendants-- note: this item does not fit for projector, please do not put it into projector to replace the original.