We established in Yokohama in 2002, has now located in Minato Ward, Tokyo. Pervious concrete waterproofing material "RC-GUARDEX" It can be used to repair a variety of all time and material age. Construction is simple. There are various effects. Shared with a variety of materials is possible. Many products "Aqueous inorganic". There are excellent resistance to hydrolysis. High performance and to conduct "at the initial stage of degradation" and "healthy state". To reduce the costs of ...