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Well-run equipment, expert income workforce, and far better after-sales expert services; We are also a unified large family, anyone stick to the corporate value "unification, dedication, tolerance" for Featured, 16"Speaker Surround , Paper Cone Foam Surround Woofer , 21"Speaker Surround Repair Kit , The design, processing, purchasing, inspection, storage, assembling process are all in scientific and effective documentary process , increasing usage level and reliability of our brand deeply, which makes us become superior supplier of the four major product categories shell castings domestically and obtained the customer's trust well.