UL Testing Agency Recommendation

Introduction to UL certification

UL certification is an abbreviation for certification issued by Underwriters Laboratories Inc. (UL), an American-based safety testing organization. UL is the most authoritative safety testing agency in the United States and one of the largest independent organizations globally focused on safety testing and certification. It is an independent, profit-oriented organization that conducts tests to ensure public safety.

Using scientific testing methods, UL assesses the potential hazards and the degree of risk various materials, devices, products, equipment, and buildings may pose to life and property. It also establishes and publishes relevant standards and data to help reduce and prevent damage to life and property. UL also conducts field research services.

Based on UL’s different service types, the UL mark is categorized into three types: LISTED, Classified, and Recognized. UL's services are not only based on US UL standards but also Canadian standards (cUL). Therefore, the UL mark is also divided into categories for UL products, cUL products, or products that meet both standards. The "us" in the lower-right corner indicates applicability to the US, and the "c" in the lower-left corner indicates applicability to Canada. If both "us" and "c" are present, the product is applicable in both countries.

UL Certification Standards for Electronic Products (UL Standards in Line with ETL and CSA)

Required Documentation for etl certification of Electronic Products:

1. User manual

2. Differences explanation

3. LED specifications

4. Structural dimension drawings

5. Model parameter list

6. Key components list

7. Circuit diagrams and layout diagrams, etc.

UL Certification Factory Inspection Requirements

UL certification requires factory inspection. When a company applies for UL certification for the first time, it must complete a factory inspection before obtaining the UL certificate. The purpose is to ensure product consistency and the correct use of the ETL logo. Once the certificate is obtained, shipments can be arranged. Subsequent certifications for similar products do not require factory inspection before certification is issued.

UL conducts factory inspections quarterly, with a total of four factory inspections each year.

Service Advantages:

1. Over 10 years of experience in the electronic product certification industry, with strong technical capabilities.

2. One-stop service for electronic product safety regulations, electromagnetic compatibility, and energy efficiency certification.

3. Localized testing and certification services for electronic products, significantly shortening certification cycles, with costs 50% lower than international institutions.

4. Authorized laboratories from major global institutions, providing internationally recognized services.

5. Leading industry capabilities in electronic product certification testing and service efficiency.

6. A team of senior engineers offering one-on-one services throughout the process, greatly enhancing certification efficiency and pass rates.

China JJR Laboratory is an independent third-party testing organization in China. It offers ul testing services and has CNAS/CMA qualifications, a chemical analysis technology team, and years of experience in the vaping industry. JJR can provide more professional and reliable UL testing and certification services based on the latest UL control requirements for electronic products, such as UL 4200a. The laboratory is strictly established and managed according to ISO/IEC17025:2005 standards and is accredited by the China National Accreditation Service for Conformity Assessment (CNAS) and the Certification and Accreditation Administration (CMA). It is fully qualified to issue third-party testing reports.