I am thinking how to make it. because I watched some video on youtube and I found if we use double lens, it will increase the PAR value, but it is only one point has high PAR, other places, lack of lights, plants can not grow well. besides, red and blue is not as bright as white, so if some company use more white in their light, it should has higher PAR. we can not avoid people compare the PAR information. From my thinking, I think higher lumens, higher PAR. if someone they their best to increast the center PAR to show to growers, that is not correct, coverage is too small. let me clear things, then find a fair way to show growers the right information.