Solar labeling needs to last a long time being that photovoltaics are good for at least 30 years.  Much of the labeling be sold today is printed and has a limited life.  The modified acrylic tags that we make we have had outdoor for over 15 years with little sign of wear.  They are engraved, not printed.  There is a reflective faced material that we can engrave.  The size charaters is limited.  Therefore most of the standards shown here on this cart page are engraved non-reflective.  We have produced many more complex tags for commercial photovoltaic installations. You will need to send drawings and have us quote such larger solar jobs.