paraiba tourmaline: a small rough crystal of the famous "paraiba" tourmaline from the batalha mine in the state of paraiba, brazil. the spectacular blue color is caused by trace amounts of copper in the mineral. this specimen measures x x centimeters. specimen and photo by arkenstone / ....
cooling system engine cooling system the product range of banco is very flexible with multiple design options in tube row and fin density combinations along with its material options for optimized cooling system performance. with a combination of various available fin channel designs, welded or extruded tubes...