Using the latest technology, Ripro Corporation created sophisticated land management systems for survey professionals, govern ... ments and landscape designers. Ripro uses 100% recycled plastics to create environmentally friendly products. Our products include Landslide Warning Systems, Flood Alert Systems, Information Stakes and Kui Markers. Headquartered out of Okayama Japan, this is the largest survey stake manufacturer in Japan with over 60% of the market share. read more