this is a company that understands that in order to sell a product, there must be an audience. five minutes later, the groups switch positions and await the next command. one of those things will be forwarded by thousands. the 22w led light can easily and safely replace the traditional fluorescent tube which is of 60w and bring about an energy saving of 38w. the collections are of interest, not only to the student or advanced scientist, but to the ordinary visitor. what are they going for anyways? the cut is most challenging, but you need luck as weather is unpredictable. 