Please ask the marble stone, six-side protection is the site to do or the manufacturer to do? And then do how to test whether to do six-sided protection?

You raised the question, I give you an answer. General marble processing, you need to do protective treatment, that is, you said the six-sided protection. Under normal circumstances, it is in the manufacturer to do, do protection before, need to clean the stone, no dust. It is best to use water to flush once, and so after drying you can do protection. Generally do protection process is to use oil-based protective agent, six sides after brushing, {i.e., stone front and back, plus four sides} need to dry and then brush again after the best. If you use water-based protective agent, at least three times as good. This effect will be better. On-site brush, space may have restrictions, if the space can also be brushed on-site. As for the test brush brush problem, this is very simple, you can splash water on top of the stone experiment, after brushing the protective agent of the stone will not be stained, that is, after the water splashed up, will instantly fall down, there will be water droplets phenomenon. This shows that the protection has played a role, not water. If not brushed, the water will shade into the stone, the water will not come down so quickly, there will be no water droplets. I hope to be able to help you.