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In 2008, Company Creation→In 2010, Tieling Erfan Rubber and Plastic R&D Co., Ltd. was invested and registered→IN 2011, Ministry of Water Resources S&T Progress First Prize (Pneumatic Shield Gate System)→IN 2012, Tongnan Sankuaishi Power Station Dam Heightening (PSRD's First Case in China)→IN 2013, Overseas Elastic Spray Products→IN 2015, high head dual BLADDER PSRD→IN 2016, PSRD Production, Installation and Acceptance Specification (Develop technical standards for the Chinese Water Conservancy Society)→In 2017, PSRD Overseas Installation→In 2018, PSRD's design specifications Develop technical standards for the Chinese Water Conservancy Society)→PSRD has built over 100 projects