1.The pu blade body takes shape, keeps the proper contact pressure with the belt through the spring and achieves scraping effection . 2.With elastomer blade, higher strength, wear-resisting, no belt damage. 3.Thanks to the modular design, screw adjuster and shock-resistance spring can absorb the external force instantly and performs effective scraping function without any belt damage. 4.Suitable for each material, such as coal mine, sinter plants, salt plants, iron ore plants, fertilizer plants, etc. As per customer's request