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General Manager Huang and Minister Pan of the purchasing department of Shenyang Xinsong Medical Technology Co., Ltd. inspected the company.China Oxygen Concengtrator Solenoid Valve，Oxygen Pressure Valve，Oxygen Flow Meter manufacturers - Select high quality Oxygen Concengtrator Solenoid Valve products in best price on Shenyang Holian.We accept OEM custom products all made in China.

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