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YS-227K Medical Mask Synthetic Blood Penetration TesterUS$ 3000.00 - 6000.00MOQ: 1 UnitXi'an Yanshuo Instrument Equipment Co., Ltd -
YS-0469A Surgical Mask Bacterial Filtration Efficiency (BFE) TesterUS$ 18000.00 - 36000.00MOQ: 1 SetXi'an Yanshuo Instrument Equipment Co., Ltd