... 3mm Magnification: 3X feature and advantages1.high light transmittance2.limpid transparent3.high light penetrability,more brighter4.high quanlity and low price5 ... magnifier, solar energy systern,led lamps,tantems,stage light,ourdoor tool,fire starter,gift for business,promotion products,for old ... be designed and manufactured in very large sizes with light weight due to less than 4mm thickness, so the ...