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ul certification
Product range:
(1) Introduction to UL
UL is short for Underwriter Laboratories Inc. UL Safety Testing Institute is the most authoritative in the United States, and it is also the largest private institution engaged in safety testing and appraisal in the world. It is an independent, non-profit, professional organization that conducts experiments for public safety. It uses scientific testing methods to study and determine whether various materials, devices, products, equipment, buildings, etc. are harmful to life and property; Identify, compile, and disseminate appropriate standards and materials that contribute to the reduction and prevention of damage to life and property, and conduct fact-based research.
UL is mainly engaged in product safety certification and operation safety certification business, and its ultimate purpose is to obtain products with a considerable safety level for the market and contribute to the guarantee of human health and property safety. As far as product safety certification is an effective means to eliminate technical barriers to international trade, UL also plays an active role in promoting the development of international trade.
UL was founded in 1894, and in the initial phase, UL was mainly funded by the fire insurance department to maintain its operations, and it was not until 1916 that UL was fully self-sustaining. After nearly a hundred years of development, UL has become a world-renowned certification body, and it has a complete set of strict organization and management system, standard development and product certification procedures. UL is governed by a board of directors composed of safety experts, government officials, consumers, educators, utilities, insurance and standards representatives, and the day-to-day work is handled by the president and vice president. At present, UL has five laboratories in the United States, headquartered in Northbrook, north of Chicago, and has corresponding laboratories in Taiwan and Hong Kong. In the United States, UL is a symbol of safety marks for consumers, and UL is one of the most trusted conformity assessment providers for manufacturers worldwide.
The types of UL's product certification and testing services can be mainly divided into listing, recognition and grading.
1. LISTED
Generally speaking, listing only applies to complete products and various devices and devices that are replaced or installed by qualified personnel on site, and various products that fall under UL listing services include: household appliances, medical equipment, computers, commercial equipment, and various electrical products that function in buildings, such as power distribution systems, fuses, wires, switches and other electrical components. Products listed by UL can usually be marked with UL's listing mark on each product. Usage of listing flags.
2. Recognized
Accreditation service is an item in UL service, and its identified products can only be used as components and raw materials on UL listed, graded or other approved products. Approved products are structurally incomplete or have certain restrictions on use to ensure the expected safety performance. In most cases, tracking services for approved products fall under category R. Approved products belonging to category L are electronic wire (AVLV2), processed wire (ZKLU2), wire harness (ZPFW2), aluminum wire (DVVR2), and metal flexible tube (DXUZ2). Approved products are required to bear the approval mark.
3. Classification
Grading services only evaluate products for specific hazards, or for products that implement standards other than UL standards, including internationally recognized standards such as IEC and ISO standards. In general, most graded products are not products used by consumers, but products used in industry or commerce. The grading mark in the UL mark indicates that the product has certain restrictions and specified ranges when it is identified by UL. For example, chemicals such as solvents used in industry are evaluated only within the range of fires that may occur when the ignition point temperature is reached. Some products are the same as the classification service and listing service, but generally only one or more aspects of the product are evaluated, such as in the United States, medical X-ray diagnostic instruments such equipment to comply with United States law and regulations on radiation emission and beam accuracy, but because UL only X-ray as a grading product, so only evaluate its mechanical properties, electrical properties and other non-radiation properties of these aspects.
4. Multiple listing, multiple recognition or multiple grading services
When a UL applicant obtains the above listing, approval or grading services, its products are to be produced in the name of another company to meet the needs of sales, can apply for multiple listing, multiple recognition or multiple grading services, in this case, the listed or graded manufacturer is allowed to use the name of another company in the product directory, but the product must be consistent with the original listed, approved or graded product in addition to the company code, product code or other characteristics that UL deems acceptable.
5. "AL" listing, accreditation or grading services
If a UL applicant does not want to obtain listing, accreditation or grading services in the name of his own company, he may apply for listing, accreditation or grading in the name of another firm (usually a retailer or wholesaler), i.e. "AL" listing, accreditation or grading services. It differs from multiple listing, multiple recognition or multiple grading services in that its applicant is not a listed person.
6. System certification services
As a member of the International Accreditation Council, UL is widely involved in ISO9000 quality system certification, ISO14000 environmental protection certification, QS9000 automotive industry quality system certification and AS9000 aircraft industry quality system certification services. A total of 116 factories in China have obtained UL system certification; Among them, 21 are ISO9001 certified, 85 are ISO9002 certified, 1 is ISO14001 certified, and 9 are QS9000 certified. 7. Other services of UL: such as certification services, inspection services, fact judgment services, research services, etc.
(2) UL certification process
Product application for UL mark includes the following steps:
1. The applicant submits relevant company and product information
Written application: You should ask UL Company in writing to test your company's products.
Company information: Provide the detailed and accurate name, address, contact person, zip code, telephone number and fax of the following units in Chinese and English.
(a). Applicant company: The company that submits the application for product testing and is responsible for all engineering service costs
(b) Listed Company: A company whose name is listed in the various product catalogs published by UL Corporation
(c). Production plant: the manufacturer and producer of the product.
Product Information: Product information should be provided in English.
(a). Name of the product: Provide the full name of the product.
(b). Product model: list all product models, varieties or classification numbers that need to be tested.
(c). The intended use of the product: for example: home, office, factory, coal mine, ship, etc.
(d). Parts list: details the parts and models (classification numbers), ratings, and names of manufacturers that make up the products. For insulation, please provide the name of the raw material, for example: GE Polycarbonate, Lexan Type 104. When the parts have obtained UL certification or approval, please prove the specific model of the parts and indicate their UL file number (e). Provide electrical schematic diagram (circuit diagram) and electrical performance table.
(f). Structure diagram: For most products, the structure diagram or explosion diagram of the product, the ingredient list, etc. need to be provided.
(g). Photographs of the product, instructions for use, safety, etc. or installation instructions, etc.
2. Make a decision based on the product information provided
When the product information is complete, UL engineers make the following decisions according to the data: UL standards based on the laboratory, the engineering cost of the test, the time of the test, the number of samples, etc., notify you in writing, and send the formal application form and tracking service agreement to your company. The cost limit indicated in the application form is the maximum engineering cost estimated by UL based on the testing item, and cannot be exceeded without your company's written authorization.
3. Apply for remittance from the company, send back the application form and samples
UL certification
The applicant signs the application form and tracking service agreement, sends the form back to UL Company, and at the same time, send the sample by bank transfer, post office or express mail, please provide appropriate description of the sample sent for inspection (e.g. name, model). Please send the application form and sample separately. For each application project, UL will designate a unique project number (Project No.) to indicate the project number and the name of the applicant company when sending remittances, samples and application forms, so as to facilitate UL to check.
4. Product Inspection
After receiving the application form, remittance, and experimental samples signed by your company, UL will inform you of the completion time of the experimental plan. Product testing is generally performed in UL laboratories in the United States, and 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 UL standards, UL will issue a test qualification report and FollowUp Service Procedure The test report will detail the test situation, the indicators reached by the sample, the product structure and the safety mark suitable for the use of the product. A description of the product and instructions for UL regional inspectors are included in the follow-up service specifications. A copy of the test report is sent to the applicant company, and a copy of the tracking service specifications is sent to each production plant.
5. The applicant is authorized to use the UL mark
UL regional inspectors in China contact the production plant for the first factory inspection (Initial Production Inspection . IPI), the inspector inspects the storage of your products and their parts in the production line and warehouse to confirm whether the product structure and parts are consistent with the tracking service specifications, if required in the specifications, the regional inspectors will also conduct witness experiments, and when the inspection results meet the requirements, the applicant is authorized to use the UL mark.
Following IPI, the inspector will visit the factory from time to time to inspect the product structure and conduct witness experiments, the frequency of inspection is determined by the type of product and the volume of production, most types of products are inspected at least four times a year, the inspector's inspection is to ensure that the product continues to comply with UL requirements, before you plan to change the product structure or components, please notify UL, for changes with minor changes, there is no need to repeat any experiments, UL can quickly modify the tracking service specifications so that the inspector can accept this change. When UL believes that the modification of the product affects its safety performance, it needs to resubmit the sample to the applicant company for necessary testing.
The cost of the tracking service is not included in the test fee.
If the product test results can not meet the requirements of UL standards, UL will notify the applicant, explain the existing problems, the applicant can improve the product design, can re-submit the product, you should tell UL engineers, what improvements the product has made, so that it decides the above is the step to apply for UL certification.
6. Apply for UL certification advantages
(1) Pre-case counseling
The customer puts forward the UL application intention - UL project engineer visits the door to guide - sign the contract
(2) After the opening of the case, the whole process of the project is followed
(1) Customer payment and provision of UL case opening information - the degree of customer cooperation determines the case opening cycle
(7) The international certification department goes to UL to open the project - within <> working days
(2) The energy efficiency department conducts DLC pre-test - within <> working days
(2) Provide samples and information provided by customers - safety department review - within <> working days
(3) Provide samples and information provided by customers - safety department review - product pre-test - within <> working days
(3) Close the case in three weeks and return to the customer.
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