The technology of fluorination is the great contribution to the monument industry. A surface treatment consisting of a 70nm layer on the surface of your monument effectively protects against dust and accelerated aging. With our patented fluorination treatment . The technology of fluorination is one of the greatest contributions ever made to the monument industry. The F-layer technology consisting of extracts from natural lotus leaves, is derived from inorganic, chemically active compounds such as organic silicon composition, and definitely not from benzene, ketones, esters and other harmful substances. Ours is a colorless, transparent gas-based liquid, which is jet atomized to the surface of the tombstone, a 70 nm thick film. With a hardness of 7H, this treatment can be very effective in protecting the surface of the headstone granite. During the process, when the permeability of the silica composition’s chemical reaction occurs, the surface composition of the headstone cures to form a durable film, with a super anti-infiltration capacity. This film can be applied to any durable surface of the tombstone. By applying this durable weather resistance to the oxide layer of the headstone surface, it can prevent the headstone from being hit by the natural occurrence of oxidation. It will also aid against and prevent the infiltration of rain and other normal weather conditions, which can make headstones lose the intensity of their natural coloring, and help it to maintain a good resistance to acid, mildew, fading. Through this patented fluoride treatment, any granite headstone, placed in any natural outdoor setting, can maintain its beauty and integrity, and have its durability extended over the next 200 years of time, or more, depending on the level of care and maintenance. Once the headstone surface fluoride treatment has been applied, it takes about 2 hours to dry and gradually harden into the clear film, usually taking about 120 hours after treatment to obtain the highest level of hardness and water resistance. The waterproof surface is so strong that it has been tested to show that it can resist a thorough, 60-day soaking rain, with no film being found on the clear seal, no loss of the integrity of the granite, and no infiltration whatsoever. This patented protective film has an average durable life of approximately 30 years. When Buy a headstone, you MUST always be sure it includes a Fluoride treatment logo to ensure that your headstone will still look new after 20 or more years. 100% Fluorination COMPARE : 30 years later OFFERSTONE professors' suggestion: The OFFERSTONE experts suggest that customers Please check the fluorination mark before you purchase! All the monuments from OFFERSTONE receives the fluorination treatment. It is a free service included with every order. With Surface Fluorination The fluoride treated headstone. With our surface treatment consisting of a 70nm layer on the surface of your monument effectively protects against dust and accelerated aging!   Without Fluorination Ten years later, the surface treatment of the non-fluorinated headstones become oxidized, the surfaces infiltrated, and start to turn black.