coloring plastic lenses

Brain Power Inc (BPI) is described as the world's largest manufacturer of optical tints used by opticians, optometrists and ophthalmologists for tinting, dyeing, or coloring clear plastic, especially optical sunglass lenses. BPI also produces therapeutic tints providing UV protection and manufactures laboratory equipment such as tinting instruments, photometers, ultrasonic cleaners, edgers, gradient lensors and ovens for heat and chemical tempering of glass lenses. Based in Miami, Florida, BPI states it has been providing products to the optical industry

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