1. The applicant submits a written application for relevant company and product information: You should request UL to test your company’s products in writing. Company information: Provide the detailed and accurate name, address, contact person, zip code, telephone and fax of the following units in Chinese and English.

(1) Applicant company: the company that applies for product testing and is responsible for all engineering service costs

(2) Listed companies: companies whose names are listed in various product catalogs published by UL

(3) Production plant: the manufacturer and producer of the product.

Product information: Product information should be provided in English. First determine whether your product falls within the scope of UL testing

(1) Product name: Provide the full name of the product. 

(2) Product model: List all product models, varieties or classification numbers that need to be tested.

(3) The intended use of the product: for example: home, office, factory, coal mine, ship, etc.

(4) Parts list: detail the components and models (classification number), ratings, and manufacturer's name that make up the product. For insulating materials, please provide the name of the raw material, for example: GE Polycarbonate, Lexan Type 104. When a part has been certified or recognized by UL, please prove the specific model of the part and indicate its UL file number.

(5) Electrical performance: For electronic appliances. Provide electrical schematic diagram (circuit diagram), electrical performance table.

(6) Structural drawing: For most products, the structural drawing or ingredient list of the product shall be provided.

(7) Product photos, instructions for use, safety, etc. or installation instructions.

2. The person makes a decision based on the product information provided. When the product information is complete, UL engineers make the following decisions based on the data: the UL standard on which the experiment is based, the engineering cost of the test, the time of the test, the number of samples, etc., and notify in writing You, and send the formal application form and tracking service agreement to your company. The fee limit is stated in the application form, which is the maximum engineering cost estimated by UL based on the test project. Without the written authorization of your company, this fee limit cannot be exceeded.

3. Applicants for remittance, return of application form and sample UL certification. Applicants sign the application form and tracking service agreement, and send the form back to UL company. At the same time, by bank transfer, at the post office</a> or to The samples will be sent by express mail. Please give appropriate instructions (such as name and model) for the samples to be submitted for inspection. Please send the application form and samples separately. For each applied project, UL will assign a unique project number (Project No.) to indicate the project number and the name of the applicant company when sending money, sending samples and application forms, so as to facilitate UL inspection.

4. After the product testing receives the application form, remittance, and experimental samples signed by your company, UL will notify you when the experimental plan is completed. Product testing is generally conducted in UL laboratories in the United States. UL can also accept audited third-party test data. Experimental samples will be returned or destroyed according to your requirements. If the product test results meet the requirements of the UL standard, the UL company will issue a test report and follow-up service details (FollowUp Service Proccdure). The test report will detail the test situation, the indicators reached by the sample, the product structure, and the safety signs suitable for the product. The detailed description of the tracking service includes a description of the product and instructions for UL area inspectors. A copy of the test report is sent to the applicant company, and a copy of the tracking service details is sent to each production plant.

5. The applicant is authorized to use the UL mark. The UL regional inspector in China contacts the production plant for the initial factory inspection (Initial Production Inspection.IPI), and the inspector checks the status of your products and their components on the production line and warehouse warehouse. In order to confirm whether the product structure and parts are consistent with the tracking service details, if required by the details, the regional inspector will also conduct eyewitness experiments. When the inspection results meet the requirements, the applicant is authorized to use the UL mark. The certification cycle is usually 3-4 weeks, which can be expedited