Devices

Mask Supply Store

FDA issued a warning letter to Mask Supply Store (Great Neck, NY, United States) on May 21, 2021, citing 21 CFR 807.39. Subject: Investigational Device Exemptions (IDE), Premarket Approval Application (PMA) Adulterated Device.

From the letter: “The 3 ply Surgical Mask, Disposable Protective Mask (which your website indicates is manufactured by “WEIDA Medical apparatus Co., Ltd”), Mask Disposable Protective, and Personal Protective Face Mask are offered for sale in the United…”

Great Neck, NY, United StatesIssued May 21, 2021Posted Jul 6, 2021Close-out Oct 5, 2021

FDA published a close-out letter on Oct 5, 2021. The findings below are from the original warning letter.

At a glance

What a reviewer notes before reading: findings, citations, the response deadline and what the letter warns of.

Violations
5 findings · 2 issue types
Response due
Not stated in the letter
FDA asks for
4 actions
Named as possible actions
None named
Issued by
Center for Devices and Radiological Health
Published status
Close-out Oct 5, 2021

AI assisted findings

Model-assisted reading of each issue. Open one to see the FDA text it comes from, and check it against the full letter.

01Registration, listing & premarketThe products are adulterated because they lack FDA marketing approval, clearance, or authorization.
The 3 ply Surgical Mask, Disposable Protective Mask (which your website indicates is manufactured by “WEIDA Medical apparatus Co., Ltd”), Mask Disposable Protective, and Personal Protective Face Mask are offered for sale in the United States without marketing approval, clearance, or authorization from the FDA. Accordingly, the products are adulterated under section 501(f)(1)(B) of the Act, 21 U.S.C. § 351(f)(1)(B), because your firm does not have an approved application for premarket approval (PMA) in effect pursuant to section 515(a) of the Act, 21 U.S.C. § 360e(a), or an approved application for an investigational device exemption (IDE) under section 520(g) of the Act, 21 U.S.C. § 360j(g).
02Labeling, claims & marketing · 21 CFR 807.39The products are misbranded because their labeling is false or misleading, including claims of FDA approval and registration.
In addition, the products are misbranded under section 502(a) of the Act, 21 U.S.C. § 352(a), because their labeling is false or misleading.
03Labeling, claims & marketingStating the Personal Protective Face Mask is “FDA Approved” and incorporating unauthorized FDA logo is false and misleading.
Stating that the Personal Protective Face Mask is “FDA Approved,” incorporating unauthorized use of FDA’s logo*2* [https://masksupply.store/]
04Labeling, claims & marketingUnauthorized use of FDA's logo on the Mask Disposable Protective's package is misleading, implying FDA approval.
Unauthorized use of FDA’s logo*2* displayed in an image of the Mask Disposable Protective’s package [https://masksupply.store/]
05Labeling, claims & marketingDisplaying a “Certificate of FDA Registration” implies FDA approval or endorsement of the devices or establishment, misleading consumers.
Displaying a “Certificate of FDA Registration” also referred to as a “FDA Certificate 3 Ply Mask” (Certificate) issued by “UCL-Reg Service Inc” near information about the products. The Certificate may be viewed by clicking on a link to “View Our Certificates.” The Certificate “certifies that Weida Medical Equipment (Wuxi) Co. Ltd … has completed the FDA Establishment Registration and Device Listing with the US Food & Drug Administration…” Although some of the text is illegible, the Certificate has the look of an official government document, incorporating unauthorized use of the FDA logo and an illustration of an eagle with the U.S. flag (or a similar flag) [https://masksupply.store/images/worldofgivingcovid19-certificate.pdf]

What FDA requested

  • Notify the FDA in writing within 15 business days of specific steps taken to address the noted violations, including an explanation of how the firm plans to prevent them from recurring.
  • Provide documentation of any actions taken.
  • If actions will occur over time, include a timetable for implementation.
  • If the firm believes the products are not in violation, include reasoning and supporting information.

FDA Warning Letter

35 paragraphs · 1 section

Text as published on FDA.gov, retrieved Sep 8, 2026. Layout added for reading; the wording is FDA’s. View on FDA.gov (opens in a new tab)

Sent toDATE: May 21, 2021
Re: “3 ply Surgical Mask,” “Disposable Protective Mask,” “Mask Disposable Protective,” and “Personal Protective Face Mask”
AddressedDear Mr. Hakim

1Letter text

20 paragraphs

This is to advise you that the United States Food and Drug Administration (FDA) reviewed your website at the Internet address https://masksupply.store/ on March 12, 2021. The FDA has observed that your website offers the “3 ply Surgical Mask,” “Disposable Protective Mask,” “Mask Disposable Protective,” and “Personal Protective Face Mask” for sale in the United States. Based on our review, these products are devices because they are intended for use in the diagnosis of disease or other conditions or in the cure, mitigation, treatment, or prevention of disease, or to affect the structure or any function of the body, and thus, are devices under section 201(h) of the Federal Food, Drug, and Cosmetic Act (the “Act”), 21 U.S.C. § 321(h).We also note that the Personal Protective Face Mask is intended for use in the mitigation, prevention, treatment, diagnosis, or cure of COVID-191 in people.

FDA’s review of your website revealed the following statements that establish that the products are intended for use in the diagnosis of disease or other conditions or in the cure, mitigation, treatment, or prevention of disease, or to affect the structure or any function of the body, including but not limited to:

The name of the “3 ply Surgical Mask” represents that the product is a surgical mask [https://masksupply.store/]

Display of an image of the Disposable Protective Mask, represents that the product is “Anti fungus…anti flu” and has a “>95% Pellet matters filter ratio” [https://masksupply.store/]

Display of an image of the Mask Disposable Protective, represents that the product is “Anti-germ” [https://masksupply.store/]

Representation that the Personal Protective Face Mask is “for COVID-19 Prevention” [https://masksupply.store/]

The 3 ply Surgical Mask, Disposable Protective Mask (which your website indicates is manufactured by “WEIDA Medical apparatus Co., Ltd”), Mask Disposable Protective, and Personal Protective Face Mask are offered for sale in the United States without marketing approval, clearance, or authorization from the FDA. Accordingly, the products are adulterated under section 501(f)(1)(B) of the Act, 21 U.S.C. § 351(f)(1)(B), because your firm does not have an approved application for premarket approval (PMA) in effect pursuant to section 515(a) of the Act, 21 U.S.C. § 360e(a), or an approved application for an investigational device exemption (IDE) under section 520(g) of the Act, 21 U.S.C. § 360j(g). These products are also misbranded under section 502(o) of the Act, 21 U.S.C. § 352(o), because your firm did not notify the agency of its intent to introduce the devices into commercial distribution, as required by section 510(k) of the Act, 21 U.S.C. § 360(k).

In addition, the products are misbranded under section 502(a) of the Act, 21 U.S.C. § 352(a), because their labeling is false or misleading. FDA registration of a device establishment or assignment of a registration number does not denote FDA approval of the establishment or the device. Thus, references to a firm’s establishment registration and registration number that create an impression of official FDA approval, clearance, authorization, certification, endorsement or other evaluation of the establishment or the devices are misleading and constitute misbranding. 21 CFR 807.39.

Your website contains a number of false or misleading representations, including but not limited to:

Stating that the Personal Protective Face Mask is “FDA Approved,” incorporating unauthorized use of FDA’s logo2 [https://masksupply.store/]

Unauthorized use of FDA’s logo2 displayed in an image of the Mask Disposable Protective’s package [https://masksupply.store/]

Displaying a “Certificate of FDA Registration” also referred to as a “FDA Certificate 3 Ply Mask” (Certificate) issued by “UCL-Reg Service Inc” near information about the products. The Certificate may be viewed by clicking on a link to “View Our Certificates.” The Certificate “certifies that Weida Medical Equipment (Wuxi) Co. Ltd … has completed the FDA Establishment Registration and Device Listing with the US Food & Drug Administration…” Although some of the text is illegible, the Certificate has the look of an official government document, incorporating unauthorized use of the FDA logo and an illustration of an eagle with the U.S. flag (or a similar flag) [https://masksupply.store/images/worldofgivingcovid19-certificate.pdf]

FDA has not approved the Personal Protective Face Mask, so statements to the contrary are false. Further, the unauthorized use of the FDA logo on an image of the Mask Disposable Protective is misleading because it implies FDA approval, clearance, authorization, endorsement, or other evaluation of the device. In addition, the Certificate, displayed near images of and information about the 3 ply Surgical Mask, Disposable Protective Mask, Mask Disposable Protective, and Personal Protective Face Mask, is misleading because it implies FDA approval, clearance, authorization, certification, endorsement, or other evaluation of the devices and/or establishment based on representations that Weida Medical Equipment (Wuxi) Co. Ltd is or was registered and that the firm is or was in possession of a registration number. Although blurry, the Certificate may contain language intended to function as a disclaimer. However, the small font size and overall placement of any such language could be easily overlooked and would not limit or otherwise mitigate the misleading impression created by the use of the Certificate. These representations are especially concerning from a public health perspective because consumers rely on information provided by sellers to determine whether to purchase a device and your presentation conveys the misimpression that the products has been reviewed and approved by FDA.

We remind you that FDA’s Center for Devices and Radiological Health (CDRH) does not issue device registration certificates to medical device establishments, including to sellers and manufacturers. When an establishment registers and lists its devices, the resulting entry in FDA’s Establishment Registration & Device Listing Database merely denotes that the establishment has provided certain information to FDA.

There is currently a global outbreak of respiratory disease caused by a novel coronavirus that has been named “severe acute respiratory syndrome coronavirus 2” (SARS-CoV-2). The disease caused by the virus has been named “Coronavirus Disease 2019” (COVID-19). On January 31, 2020, the Department of Health and Human Services (HHS) issued a declaration of a public b health emergency related to COVID-19 and mobilized the Operating Divisions of HHS.3 In addition, on March 13, 2020, there was a Presidential declaration of a national emergency in response to COVID-19.4 Therefore, FDA is taking urgent measures to protect consumers from certain products that, without approval, clearance, or authorization by FDA, claim to mitigate, prevent, treat, diagnose, or cure COVID-19 in people. As described above, you sell a product that is intended for use in the mitigation, prevention, treatment, diagnosis, or cure of COVID-19 in people. We request that you take immediate action to cease the sale of any adulterated and misbranded products for the mitigation, prevention, treatment, diagnosis, or cure of COVID-19.

This letter is not meant to be an all-inclusive list of violations that exist in connection with the product or your operations. It is your responsibility to ensure that the products you sell are in compliance with the Act and its implementing regulations. We advise you to review your website, product labels, and other labeling and promotional materials to ensure that you do not make representations that misbrand the product(s) in violation of the Act.

This letter notifies you of our concerns and provides you with an opportunity to address them. Please notify this office in writing within fifteen 15 business days from the date you receive this letter of the specific steps your firm has taken to address the noted violations, as well as an explanation of how your firm plans to prevent these violations, or similar violations, from occurring again. Include documentation of any actions your firm has taken. If your firm’s planned actions will occur over time, please include a timetable for implementation of those activities. Your firm’s response should be comprehensive and address all violations included in this letter. If you believe that the products are not in violation of the Act, include your reasoning and any supporting information for our consideration.

Your firm’s response should be sent via email to CDRHWarningLetterResponses@fda.hhs.gov or by mail to:

Food and Drug Administration Center for Devices and Radiological Health Office of Regulatory Programs Division of Regulatory Programs 2: Establishment Support Regulatory Inspections and Audits Team White Oak Building 66 10903 New Hampshire Ave. Silver Spring, MD 20993

Refer to the Document number CMS Case# 612585 or CTS Number CPT2000665 when replying. We remind you that only written communication is considered as official. If you have any questions about the contents of this letter, please contact: Assistant Director, Paola Barnett at 301-796-5462 or Paola.Barnett@fda.hhs.gov.

Sincerely, /S/

Donna Engleman, MS. BSN. Director Division of Market Intelligence Office of Regulatory Programs Office of Product Evaluation and Quality Center for Devices and Radiological Health Cc:

Dalcom USA Ltd. 11 Middle Neck Great Neck, NY 11021 Email Address: Fred.Hakim@masksupply.com

Jun Ye Weida Medical Equipment (Wuxi) Co., Ltd. No. 155, Wuyu Road, Yuqi Street, Huishan District Wuxi Jiangsu, CN 214000

Aizhen Chen 143 Division St New York, NY 10002 Email: 19757348@qq.com

Qingyuan Zhang UCL-RegService Inc. 602 Rockwood Road Wilmington, DE 19802

__________________________

1 As explained below, there is currently an outbreak of a respiratory disease named “Coronavirus Disease 2019” (COVID-19).

2 The FDA logo is for official use by FDA and not for private use on labeling of FDA-regulated products. See FDA Logo Policy (available at: https://www.fda.gov/about-fda/website-policies/fda-logo-policy).

3 Secretary of Health and Human Services, Determination that a Public Health Emergency Exists (originally issued Jan. 31, 2020, and subsequently renewed), available at https://www.phe.gov/emergency/news/healthactions/phe/Pages/default.aspx.

4 Proclamation on Declaring a National Emergency Concerning the Novel Coronavirus Disease (COVID-19) Outbreak (Mar. 13, 2020), available at https://trumpwhitehouse.archives.gov/presidential-actions/proclamation-declaring-national-emergency-concerning-novel-coronavirus-disease-covid-19-outbreak/.

Citations and trends

Each 21 CFR section, ISO 13485 clause and issue type in this letter, how often it appears across all letters, and its trend by the year FDA issued the letters. 2026 runs to Nov 3, 2026, compared with the same dates last year. Select a row or a bar to see those letters in Letters. As cited in this historical letter, not a statement of current requirements.

Regulations

Issue types

Record details

Issuing center
Center for Devices and Radiological Health
Issuing office
Center for Devices and Radiological Health
Location
Great Neck, NY, United States
Letter posted date
Jul 6, 2021
Letter issue date
May 21, 2021
Addressed to
Not recorded
Inspection dates
Not recorded
Response window
Not verified in this snapshot. Consult the original letter.
Record length
1,595 words · 0 recorded redactions
Published status
Close-out published Oct 5, 2021
Original letter
View on FDA.gov (opens in a new tab)
Dataset last checked
Nov 11, 2026 · How this is built

A response window is not a calculated due date. Source excerpts are selected passages. Finding interpretations and categories are model-assisted. Verify the original letter before relying on a finding.

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