flexible aluminum duct-flexible ducting for air conditioning flexible aluminum duct-flexible ducting for air conditioning of Shanghai Xuanyuan Air Conditioning Equipment Co., Ltd. achieves an outstanding outcome in the international market. Its long-term service life, remarkable stability, and stylish design help it gain great recognition. Though it has passed international standards including ISO 9001 and CE, it is viewed to have quality improved. As the R&D department continuously introduces trending technology into the product, it is expected to excel others in a broader application.
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