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![]() Our History Shandong Shuangyuan Sealing Technology Co., Ltd. was established in 2004 and is a technology innovation enterprise with 20 years of experience in the production and sales of butyl sealant products. It is located in the Economic Development Zone of Yishui County, Shandong Province. It owns Shandong Gelu New Material Technology Co., Ltd. and Shanghai Gelu New Material Technology Co., Ltd. The company has 14 technical patents and 16 intellectual property rights, and has participated in th... [Details] |