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We continue to keep increasing and perfecting our solutions and service. At the same time, we operate actively to do research and enhancement for Featured, Noise Insulation Sponge Foam , Sound Insulation Barrier , Railway Noise Barrier , We now have been making our goods for more than 20 years . Mainly do wholesale , so we've the most competitive price , but highest quality. For the past years , we got very good feedbacks , not only because we offer good solutions , but also because of our good after-sale service . We are here waiting for yourself for your inquiry.