Hefilter15 - Latest News 2026-07-22T08:51:07+00:00 urn:uuid:0a81e6cb-393e-fc4d-5e4d-c00d147f164c Shanghai HEFIL Purifying Equipment Manufacturing Co., Ltd. urn:uuid:21da0b70-18ef-ccfb-e6fd-c6aa0aaae79f 2015-01-14T08:35:07+00:00