Dear Sir, we are a big producer of sponge rubber cleaning balls for concrete pumps, sponge rubber 0-rings, frames and rubber profile molded in closed systems, gaskets, joints for street sweepers and industry sweepers made in sponge rubber and our items are made according to DIN-Norms and ASTM-Standarts, also you can make the testing everywhere and evrytime, when your customer require to make the testing. Thanks very much for your kindly interesting in advanceBest regards. Mahir CetinSales ManagerUKUGUR KAUCUK Ltd. -Istanbul / TurkeyTel. : + 90212 485 9124 or + 90212 485 9125Fax: + 90212 485 6350Mobile: + 90541 532 1032