The temporary sealant is actually a film on the surface of the stone. This piece is not firmly in contact with the stone and can be removed. The general market is a polymer containing pressure grams, polyethylene, polyvinyl chloride, styrene resin, and chemical components. Water-based products composed of materials, these products are actually not concrete stones. Special protective agents did not appear for early stone. Some people can also achieve certain protective effects when they use waterproof coatings for house roofs. Historically, in the Rhine River in ancient Europe, due to the perennial dampness, mold, moss, moss, black and stone "lesions" appeared in varying degrees at the bottom of the construction. More than two thousand years ago, the staff tested the stone seal protector. , That is, use pine juice to dilute the stone, and prevent and overcome the disease repeatedly. In modern times, there is a kind of wax, which is used as a more important stone. There is no record of stone protective agent in ancient China. This is closely related to the ancient buildings in my country that adopted stone and architectural practice concepts. Chinese traditional buildings are mostly masonry, stone and wood Qin tiles, which are only used for some foundations, stairs, and pillars; the other is The concept of general stone is made as a kind of art, such as sculptures, decorations, religious objects, such as China, some buildings constructed entirely of stone, which made the fire of the Afang Palace with brick and wood structure of the Qin Dynasty disappear. And European architecture is complete in Europe, the Leaning Tower of Pisa is a complete set of stone buildings. In order to protect stone buildings, Europe first proposed modern stone protection concepts and products. In the modern industry, a series of protective agents for stone surface types have been studied