RFH 532nm green laser engraves colored glass inside in less than a second   Colored glass is a new type of glass created by people who are not satisfied with transparent glass. It has been greatly improved in terms of beauty and creativity. For colored glass, the use of internal carving technology can also add artistic value to it. .   Mr. Liu from Zhejiang recently contacted RFH by e-mail, hoping to purchase a green laser for the production of colored glass in-engraving process.