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NIOSH Respirators User Notice

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Issue Date: December 16, 2009

From: Heinz Ahlers, Chief, Technology Evaluation Branch, National Personal Protective Technology Laboratory

Subject: Voluntary Rescission of all Respirator Certificates of Approval Issued to Guangzhou Weini Technology & Development Co., Ltd. (GWT) Effective December 16, 2009.

At the request of Guangzhou Weini Technology & Development Co., Ltd. (GWT), The National Institute for Occupational Safety and Health (NIOSH) has rescinded the following certificates of approval:

  • TC-84A-4356          TC-84A-4916
  • TC-84A-4359          TC-84A-4917
  • TC-84A-4360          TC-84A-5165
  • TC-84A-4915          TC-84A-5166


As of December 16, 2009, no GWT respirator model bearing any NIOSH approval number listed above is approved and will not be manufactured, assembled, sold or distributed as NIOSH approved product. The U.S. Government's Official Web PortalDepartment of Health and Human Services
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