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The United States UL certification Introduce

English Underwriters Laboratories UL (Underwriter Laboratories Inc.) Shorthand. UL safety test of America's most authoritative, but also engage in community safety testing and identification of the larger civil society institutions. It is an independent, non-profit, do testing for public safety professional organizations. It uses scientific methods to study the test identified a variety of materials, devices, products, equipment and construction to life, property damage and whether the degree of hazard; identify, write, issue the appropriate standards and help reduce and prevent the cause of life property losses of information, while carrying out the facts research business. In short, it is mainly engaged in product safety certification and safety certificate to operate the business, with the ultimate aim is for the market to be a fairly safe level of merchandise for personal health and property is guaranteed to contribute. Product safety certification for the elimination of technical barriers to international trade in terms of effective means, UL to promote the development of international trade also played an active role.

 

    UL standard is a continuous improvement document. UL standard revision required by the industrial sector, users, UL engineers or other interested parties put forward. Industry to modify the program: When you need to modify the content of some UL standards, the requirements of the product will produce a corresponding change, for, UL developed a formal program of industry changes.

 

    UL published standards in every part of changing the effective date will be announced. At the effective date, are UL track inspection services of the product must be in accordance with new requirements make the appropriate changes, so, until the date of change from the standard effective date published between leaving plenty of time to change their own factory UL tests products and submit again. After the formal adoption of the change request, on the implementation of revised procedures for the industrial sector. The program includes: sending formal notice to the applicant, to change the start date, identified by the UL engineer the product in accordance with the same methods to help the applicant check the product need to change the part, and before the date of change in the effective tracking UL factory inspection documents. After the commencement of the new standard, UL inspection visits on behalf of the manufacturer, according to the request for amendment to change the corresponding part of the review.

 

What is the UL mark

 

    Underwriters Laboratories UL is the abbreviation (Underwrites Laboratories Inc.), It is the world's largest in the safety testing and identification of non-governmental organizations. In the 100 years of development, its own form a tight organization and management systems, standards development and product certification program. Is an independent, non-profit, do testing for public safety professional organizations. It uses scientific methods to study the identification of materials, devices, products, equipment, construction of life and property without harm; to identify and prepare, issue the appropriate standards and help reduce and prevent life and property caused by the loss of information . At the same time to carry out research operations, product safety certification and safety certificate to operate the business, its ultimate goal is to provide the market with a considerable level of safety of goods.

 

    UL as an independent third party inspection agency, its composition is unique, it is by security experts, government officials, consumers, education, utilities, insurance and standards department of the Council composed of representatives of management. UL business scope covers more than 70 countries and regions in each of the 16,500 kinds of products tested 77,000 times the task. At the same time there are 48 million times each year factory inspection tasks. More than 400 employees, more than 40,000 customers worldwide, 90 billion products with UL safety mark. UL's headquarters in Chicago, there are five main laboratories, two laboratories in Asia: Hong Kong and Taipei.

 

Proper use of UL Marks

 

    The UL mark is divided into three categories, namely the column name, classification and recognition of flags of the main components are UL patterns, which are registered trademarks. Were used in different service products, is not universal. UL recognized by a company, does not mean that all products of the company's products are UL, UL mark only wear the product to be considered under UL's Follow-inspection services products. UL is the use of the product or products related to the use of column names, classification, UL approval mark to distinguish the product (see Figure). UL's services not only based on UL standards, is also based on Canadian standards, UL requirements by January 2008, for both UL and CUL Listed or Recognized products, can be affixed to UL and CUL mark, after 2008, will use the new logo.

 

    UL classification R Follow-type and L type, L type is mainly used for safety-related products, such as fire extinguishers, detectors, electrical equipment, wires and so on. Belonging to L class products. Production plant must be attached directly to the UL mark on the product ordered. R products are mainly electrical equipment, such as television, electric fan, hair dryer, oven, etc.

 

Authentication of UL Marks

 

    As a distinctive feature of UL products, all products must have the UL UL Listed, recognized or Classification Mark. Classification Mark is rare in China, the vast majority of the column name, recognition products. Column names, including L type approval mark the column name, logo recognition and R column name recognition mark. Class L UL Listing Mark is printed in the United States (in label form) and released. It is generally more stringent control. Sign is composed mainly divided into four parts:

 

◆ UL registration patterns.

◆ "LISTED" word, all caps.

◆ UL's (Control No.) ISSUE NO XXXXX.

◆ product name.

 

There may be other signs, but these four are essential. Different classes of L, R Class column name signs can be directly used by the factory color printing, stickers, molding, printing and other forms directly on the product label (L products to the UL label must be purchased).

 

Class L mark is recognized by UL in the U.S. printing and distribution, mainly composed of three parts. L type approval mark only used in wires and components. The components are divided into:

◆ approved logo

◆ Control Number Issue No

◆ Product Name

 

R logo recognition products can be "approved parts catalog" in the provisions of the "product mark" to identify. Generally include plant identification symbol, number or type of type approved products. R logo recognition products do not have to appear on the product.

 

Characteristics of counterfeit UL Marks

 

    Listed product UL mark four basic components are not complete. The UL pattern, "LISTED" word, UL control number, product name four parts incomplete or inaccurate identification. Such as UL registered pattern U, L are two letters in the same horizontal line, and word on the label is out with a typewriter, rather than through printed or embossed; "LISTED" incomplete word is capitalized, such as written "Listed" and so on; UL control number is not the letters or numbers, such as all digital or all English, or more than 4, etc.; UL's letters (Underwrites Laboratories Inc.) full name is missing letters and so on; UL listed Name the symbol printed oval.

 

    Printing rough, illegible, and to one side.

 

    Label packaging label with the UL's really inconsistent. Adhesive label with the UL is generally Juan Chengyi bundle, Zhu cylindrical-shaped bundle of 500, 1000 no adhesive labels (for some of the wires) was strip, each 10. The UL label is a sheet of counterfeit packaging, there is usually a 20-60, made of paper substrate with a yellow light.

 

    On the same plant with a product label, there is a certain number of its control range, but some limited number of fake UL labels.

 

Three procedures to apply the UL mark

 

Obtain and submit applications

 

    Products to UL for examination, you must first obtain an application, and UL application form, this can be done through the relevant agencies such as UL contact with the inspection company to complete. Plants provide the following information to UL, UL needs this information to determine the application requirements of the test items, test samples and costs.

 

◆ Product name or description. To apply the product to the list of specific names and a brief description, including products used for materials.

◆ products designated uses. Products are used where it is indoors or outdoors, water, or underwater, and so on.

◆ Model. Including product words.

◆ product ratings. Such as voltage, current, frequency, power and so on.

◆ parts list of the composition of the product components, including printed circuit boards, switches, wires, fuses, insulation materials. And indicate the relative

Should be the model name, electrical rating and whether it is UL listed or approved products. Use has been UL listed or UL recognized components can reduce product testing procedures and report the details about this description, thereby reducing inspection costs and shorten the examination time. For insulating materials, raw materials used to list the name, model.

◆ drawings, diagrams. Provide as much as possible, including schematics, product drawings and photos, operating instructions manual and other information products to UL for your better understanding.

◆ Company materials. After receipt of the material when the UL, will determine the eligibility criteria, test items and test cost and test samples, and send the application form and check the service agreement after the inspection. Application form will specify the amount of fees and remittance methods. UL will sign the agreement and receipt of required fees and the required test samples, we began to do the testing.

 

Product Testing

 

    UL received a signed application form, remittance and laboratory test samples, the samples will be tested, including structural inspection and test. After detection is complete, UL will notify the applicant of the result. If the results are qualified, UL will issue two documents; posterior Inspection Service rules and report. After the screening test details, including a description of the product and the UL inspector's instructions, which is based on UL tests. Report copy to the applicant, and details are copied to each manufacturer. UL may give you a final invoice, the amount of advance remittance is more than that part of the cost. The test samples will also send your request or destroyed.

 

    If the test results fail, you will received a report from the UL, which lists what areas do not meet the requirements. You can improve or modify the product mix and re-sent to UL testing. However, the change of the structure should be listed for UL decide which repeated tests. The lower cost than the initial detection. UL re-submitted the receipt of your information, supplementary application form will be sent to you, and your advance payment required by the modified samples. The entire process is similar with the last.

 

After the screening test

 

    UL products in the laboratory testing period, customers will receive a tracking test agreement. Agreement marked with manufacturer's name, in duplicate. Agreement by the manufacturer or the authorized person responsible for signing and returning an UL. Agreement must be signed by all parties to take effect. If they do not sign, UL is not allowed factories to UL Listed or Recognized to use the logo on their products. Products comply with UL requirements, manufacturers will receive a copy of rules. Describe the production process should comply with the requirements, which is UL's Follow-test basis. UL's field representatives will contact the manufacturer for factory inspection matters. After checking the cost of testing will not be included in the above test costs.

 

    If the test results fail, you will received a report from the UL, which lists what areas do not meet the requirements. You can improve or modify the product mix and re-sent to UL testing. However, the change of the structure should be listed for UL decide which repeated tests. The lower cost than the initial detection. UL re-submitted the receipt of your information, supplementary application form will be sent to you, and your advance payment required by the modified samples. The entire process is similar with the last.