UL Certification;UL Mark Requirements;UL Listed, Recognition & Classification

UL is short for American Underwriter Laboratories Inc.. UL is America's most authoritative, and also the largest engaged in security testing and identification of civil society institutions in the world. It is an independent, non-profit, do testing for public safety professional organizations. It uses scientific methods to study the test to determine the extent of a variety of materials, devices, products, equipment, construction of life, property and whether the harm; determining, write, issue the appropriate standards and help reduce and prevent life loss of property information, while carrying out the facts research business.

About UL
safety certification and operational safety proof products business, the ultimate aim is for the market to get the goods with a considerable level of safety, guaranteed to personal health and property safety to contribute. Product safety certification as an effective means to eliminate technical barriers to international trade in terms of, UL to promote the development of international trade also played an active role.

phase of UL fire insurance sector by maintaining the action until 1916, UL was completely self-supporting. After nearly a century of development, UL has become a world-known certification body, which itself has a set of strict organization and management system, standards development and product certification programs. UL made a council to manage security experts, government officials, consumers, education, utilities, insurance and standards department composed of representatives of the daily work of the president, vice president of process. Currently, UL has five laboratories in the United States, headquartered in Northbrook town north of Chicago, while the corresponding laboratory set up in Taiwan and Hong Kong. In the US, for consumers, UL is a symbol of safety signs, global, UL is one of the most trusted manufacturers conformity assessment provider.

About UL Marks
UL logo template
UL mark is usually identified in the product (or) products and packaging to indicate that the product has passed UL certified to meet safety standards.
These mark the most important part of the pattern is UL symbols, these symbols are registered trademarks of UL.

UL mark requirements
1.The registered trademark of the minimum height should be 3/64 inch.
2.When the UL mark the outer diameter is less than 3/8 inch, the registered trademark symbol if is without clear and readable by the naked eye ,can be ignored.
3.The mark can be available by stamping, molding, printing ink, screen printing or the like directly and fixed on the same product.
4.Receive the mark: manufacturer may be reproduced or authorized dealer to obtain from UL.
5.ULus logo(only have us,without c):Products into the US market safety symbol；cUL(only have c,but no us):Products into the CA market safety symbol；cULus logo:Products into both US and CA markets safety symbol

Services contents
the type of UL product certification, test services can be divided into the listed, recognition and classification.
1. LISTED:
In general, the listed only applies to the complete product and a variety of devices and devices qualified personnel in the field to be replaced or installed, the UL listed and services a variety of products including: household appliances, medical equipment, computers, business equipment as well as the role in the building of all kinds of electrical products, such as power distribution systems, fuses, wires, switches and other electrical components and so on. By UL listed products, usually marked with the UL Listing Mark on each product. Listing Mark usage.

2. Recognized:
recognition service is one of UL service project, and its products can only be identified between the UL Listing and Classification or as components of other approved products, raw materials use. Approved products in the structure is not complete, or there are certain restrictions on the use to ensure the expected safety performance. In most cases, the approved products tracking service belong to the class R. Belongs to the class L recognition products are electronic line (AVLV2), processing wire (ZKLU2), harness (ZPFW2), aluminum (DVVR2), and metal flexible tube (DXUZ2). Accreditation requirements with product approval mark.

3. Classification:
Classification services only for product-specific hazard evaluation, or for other than the implementation of other standards UL standards (including internationally recognized standards, such as IEC and ISO standards, etc.) for the product were evaluated. In general most of the products are not consumer level products, but the use of industrial or commercial product. UL logo in hierarchical flag indicates that the product identified by UL when there are certain restrictions and a predetermined range. For example on the use of industrial chemicals such as solvents, fire only when the range reaches its ignition temperature may occur evaluated. Grade service and same column name for certain products and services, but generally only for one aspect or several aspects of the product evaluation, as in the United States, this type of medical X-ray diagnostic equipment to the country to comply with US law and the relevant radiation emission and beam provisions of flow accuracy, but because only the X-ray as UL classified product, so only evaluate its mechanical properties, electrical properties and other non-radiation properties of these aspects.

4.Multi-listed, multi-recognized or multi-classification
applicant after a UL acquires the listed, recognized or classification, and its products to be in the name of another company's production to meet the needs of sales, can apply Multi-listed, multi-recognized or multi-classification services, in which under case, get the listed, accredited or manufacturer classification are allowed to use the product directory in another company's name, but the product in addition to the company code, product code or UL company considers acceptable to other characteristics, must be original listed, product approval or grading consistency.

5.listed, recognized, classification services
If the applicant does not intend to obtain UL Listed in the name of their company, approval or grading service, he could apply with another firm (usually a retailer or wholesaler) to apply on behalf of a listed, recognition or classification, the "AL" listed, approval or grading service. Multiple listed, muti-recognize, multi-classification the difference between the applicant is not in its celebrity column.

6.System certification services:
As a member of the International Accreditation Committee, UL widely involved ISO9000 quality system certification, ISO14000 environmental certification, QS9000 automotive industry quality system certification and AS9000 aircraft industry quality system certification services. A total of 116 domestic factories achieved UL certification system; where 21 is ISO9001 certification, 85 for the ISO9002 certification, a certification of ISO14001, nine of QS9000 certification.

7.UL other services
As proof of service, inspection services, the facts determine services, research services.

Process
Product apply for UL mark comprises the following steps:
1.Applicants submit information about the company and products
Written application: You should request, in writing UL company Company's products for testing.
Company information: in English and provides the following units detailed and accurate name, address, contact person, zip code, telephone and fax.
(a)applicant :Product testing companies to apply for and be responsible for all engineering services
(b) Listed applicant: Lists the name of the company in a variety of products UL publishes directories
(c)Manufacturers: Product manufacturers and producers.

Product Information: Product information should be available in English.
(a)Product Name: Provide the full name of the product.
(b)Product model: detailing all need to experiment with product modle, variety or DOI, etc.
(c)Products intended use: for example: homes, offices, factories, coal mines, and ships.
(d)Components List: detailed composition of the product components and models (DOI), the rating, the manufacturer's name. For the insulating material, please provide the name of the raw material, such as: GE Polycarbonate, Lexan Type 104. When the parts have been UL certification or accreditation, please prove that the specific model of the component, and indicate its UL file number (e) electrical performance: For electrical and electronic products. Providing an electrical schematic (circuit diagram), the electrical properties of the table.
(f)Construction chart: For most products, the need to provide the product or an exploded view diagram, the list of ingredients and the like.
(g)Product photos, instructions for use, safety, or other items of installation instructions.

2. Make decisions based on product information provided
When product information is complete, UL's engineers to make the decision based on the following information: UL standard test is based on engineering cost test, the test of time, the number of samples, so as to notify you in writing, and the official application form and tracking services agreement sent to your company. Application form indicate the cost limit is the maximum cost of the project in accordance with UL test items and estimates, not your company's written authorization, the fee limit can not be exceeded.

3.Applicant remittances, return the application form and samples
Applicant sign on the application form and track service agreement and send back the form UL company, meanwhile, by bank transfer, at the post office or courier to send samples, please send a sample test will be appropriate description (such as name, model). Please send the application form and sample separately. For each application project, UL is assigned a unique item number (Project No.) in remittances, send samples indicate when an item number and the application form, the applicant company name, in order to UL check.

4.Product testing
After receiving the application form, remittances, experimental samples of your company signed, UL will notify you that the test plan completed. Product testing is generally performed in the United States UL laboratory, UL also accept the participation of a third-party audited test data. Experimental samples will also be sent or destroyed according to your requirements.
If the product testing results meet the UL standard, UL Company will issue a test compliance report and track service rules (FollowUp Service Procedure) test report will detail the test case, the sample to reach the targets, product structure and use of the product for safety signs. In tracking service rules included in the description of the product and to regional inspectors UL instructions. A copy of the inspection report mailed to applicant, a copy of the tracking service rules mailed each production facility.

5.The applicant is authorized to use the UL Mark
contact factory inspection (Initial Production Inspection .IPI), inspectors who check your product and its components in the case of the production line and warehouse warehousing to confirm whether the product structure and parts consistent tracking service rules, if rules required, regional inspectors also witnessed the experiment, when the test results meet the requirements, the applicant is authorized to use the UL mark.
Following the IPI, the inspector will check from time to time to the factory to check the product structure and witnessed the experiment, the frequency of inspections is determined by the type of product and production capacity, most of the types of products checked at least four times a year, inspectors check is in order to ensure that products continue to be consistent with the UL requirements before you plan to change the product mix or parts, please notify UL, minor changes for change, do not repeat any experiment, UL can quickly modify the tracking service rules, so that inspectors can accept Such changes. When UL think the product changes affect its safety performance, the need to apply for the company to re-submit the necessary testing samples.
Expense tracking service is not included in the test costs.
If the product test results can not meet UL standards, UL will notify the applicant, explain the problems, the applicant improved product design, you can re-inspection product, you should tell UL engineers, what had been done to improve the product so that it can decide over It is the steps to apply for UL certification.

Inspection Rules
General
UL inspectors test is essentially a mechanical job. Depending on the product, the inspector's test based on a notice (Bulletin), Rules (Procedure), FUII (if included in the rules), and UL standards (if there is demand FUII).
If the inspectors visit the factory, the factory is producing UL product, or inventory of UL products, the inspector will take samples in one of the following ways:
1. The individual components extracted from the line drawn from the warehouse plus a complete product.
2. The individual components extracted from the warehouse together with a complete product line.
3. The complete product is extracted from the warehouse used to split.
Specific number of samples depends on the details, FUII (track inspection instructions), SAP (standard attached) or from the direct command UL laboratories. Every inspector test does not necessarily test all products, but they will try to test all product categories or models within a year or at least two years.
Generally, UL factory production system requirements are not too high, only required once a year for metering equipment, keep the factory own inspection records, as well as unqualified to have some means of control.
Inspection, field representatives (UL inspectors) will focus primarily on the product itself, they will one by one to check structures, components and assembly of products based on the test basis. For components related to product safety, the general rule will specify requirements for the UL certified products, and will specify the manufacturer and model; for housing, shields and other injection molded parts, under normal circumstances Conditions will specify its raw material and size requirements. Field representatives will verify the above, and UL mark in the Regulations of.