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“STC tested” Mark Certification for First Batch of 16 Face Mask Manufacturers to Gain Confidence of Consumers
13 Aug 2020

STC (Hong Kong Standards and Testing Centre) recently awarded “STC tested” Mark Certificates to 16 face mask manufacturers. This certification serves to confirm these face masks are in compliance with specific standards, deserving of the confidence of consumers when they purchase such face masks to protect their safety and health during the current epidemic.


The 16 “STC tested” Mark Certification manufacturers are: Ai Care Medical Technology Limited, Art Beauty Group Company Limited, Asia Pacific Industrial Safety Equipment, Dongguan Shingshun Electronics Plastic Company Limited, Guangdong Weisdin Science and Technology Co Ltd, Guangdong Kaidi Garments Company Limited, Guangzhou Jiani Medical Technology Company Limited, Health and Beauty Medical Supplier Company Limited, Medipark Pty Ltd, Oneness Development Limited, Oxyair Mask HK, Pure Living Inc Limited, Shan Ho Asia Pacific Limited, Shang Manufacturing Limited, Top Leader Group International Limited, and Wing Ming Co(O/B Allways Health-Care Corporation Limited).


Face masks produced by the above 16 face mask manufacturers have been rigorously tested by STC according to the US ASTM F2100-19, EU EN14683:2019 and China GB 15979:2002, including the following testing items: Bacterial Filtration Efficiency (BFE)%, Particulate Filtration Efficiency (PFE)% at 0.1µm, Differential Pressure (Delta P) (mmH₂O/cm² or Pa/cm²), Resistance of Penetration by Synthetic Blood (mmHg), Flammability to Class 1 or Microbial Cleanliness and Total Bacterial Count, Coliforms, Pseudomonas aeruginosa, Staphylococcus aureus, Hemolytic Streptococci, and Total Fungal Count.


In the face of the global coronavirus epidemic, face masks have become an indispensable protective device in people's daily life. At present, there is a wide variety of masks on sale in the market of varying quality. The Hong Kong Customs has recently identified several makes of surgical masks exceeding the maximum permitted bacterial count limit. It is not easy for consumers to verify the accuracy of the labelled information, making it difficult for them to make a purchase decision. The “STC tested” Mark label on the packaging of certified face masks will assist the general public in picking the qualified brands, and is certain to boost their confidence when making a choice.


The “STC tested” Mark is a product quality certification scheme established in 2003 and managed by STC with the aim of helping consumers make the best shopping choice. Products certified under the Scheme have been rigorously tested by STC to verify their compliance with relevant local and international standards.

“Changzhou Electronic Product Quality Supervision & Inspection Co. Ltd.” has changed its name to “STC (Changzhou) Co. Ltd.”
07 Aug 2020

To establish a sole global corporate identity for the STC (Hong Kong Standards and Testing Centre), we are delighted to announce that “Changzhou Electronic Product Quality Supervision & Inspection Co. Ltd.” has changed its name to “STC (Changzhou) Co. Ltd.”.


Changzhou Electronic Product Quality Supervision & Inspection Co. Ltd. was established in 1986 and has more than 30 years of experience in providing testing service for government market surveillance for products in circulation and customer entrustment inspection. In 2015, it became a member of STC and covers an area of 25acres. 


The renaming of Changzhou Electronic Product Quality Supervision & Inspection Co. Ltd. is part of our effort to establish a single global corporate identity for the STC group. Attaining years of experience, our company has developed into an independent third-party testing organization, and has been approved and accredited by CMA, CNAS, CQC, GACC etc., our services extended from electronic product move towards diversification, providing comprehensive testing services for the following products: smart toilets, electronic and electrical appliances, socket plugs, lithium batteries, lighting equipment, audio and video equipment, handheld power tools, information technology equipment and household appliances, chemicals, automotive parts, materials, toys and children's products, furniture, sanitary wares, shoe materials, luggage, PCB circuit boards and other products.


Apart from the company name, our contact details, bank account and tax identification number remain unchanged:


STC (Changzhou) Co. Ltd.

Address: No.19 Xinke Road, Electronic-Technology Park, Changzhou, Jiangsu, China

Tel: +86 519 8548 7806

Fax: +86 519 8548 7811




Should you have any enquiries, please don’t hesitate to contact us.

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