亚洲国产午夜福利精品,顶级欧美熟妇高清xxxxx,激情小说图片,亚洲男人的天堂成人www
        Hotline:400-880-1556

        English




        UL certification of heater——ZRLK

        Author:中認聯科 time:2023-06-01 Ctr:983

        The so-called heater refers to the equipment used for heating. At present, the most common heater in the market is the electric heater, which is a heating device that uses electricity as energy to heat and heat, and is widely used in various civil/public buildings such as houses, offices, hotels, shopping malls, hospitals, schools, train carriages and so on. However, in general, if such products want to be exported to the United States, they need to apply for UL certification.

        image.png

        The necessity of handling UL certification

        1. The entire American market attaches great importance to product safety; Consumers and buyers will choose products with UL certification mark when purchasing products;

        2. UL has a history of more than 100 years, and the image of safety is deeply rooted in consumers and the government. If you don't sell products directly to consumers, middlemen will also require products to have UL certification marks to make products sell well;

        3. American consumers and buyers have more confidence in the products of enterprises;

        4. There are more than 40,000 administrative regions in the United States, including the federal, state, county and municipal governments, all of which recognize the UL certification mark.

        UL certification test project of heater

        1. Input power test

        2. Leakage current test

        3. Normal fever test

        4, device durability test

        5, overvoltage test

        6, fan stall test

        7. Overturning test

        8, facing the wall test

        9, cotton coverage test

        10, cotton strip coverage test

        11, hanging wall heater test

        12, special ring temperature test

        13, remote control device to protect the motor locked rotor test

        14. Motor stall test of impedance protection

        15. Test of heating element jumper motor

        16, durability test

        17, short circuit test

        18, transformer overload test

        19, transformer burn-out test

        20. Abnormal testing of components

        21, withstand voltage test

        22, insulation resistance test

        23. Rain test

        24, stability test

        25. Impact test of heating element support.

        26, drop test

        27. Label test on power cord

        28, the protection of human injury test

        29, knob solid test

        30, adjusting device strength test

        31, static pressure test

        32, the power cord compression device tension test

        33, nameplate test

        UL certification process of heater

        1. Project determination: confirm the UL standard, certification cost and time, sample number, etc. on which the test is based;

        2. Preparation of materials: According to the requirements of UL, the enterprise prepares various materials or documents required for certification;

        3. Sample sending test: the enterprise sends the samples to the designated laboratory for product testing;

        4. Issue report: The product test results meet the requirements of UL standard, and the test report is formally issued;

        5. Factory audit: UL will conduct the first factory inspection of the production factory to ensure that it meets the standard requirements;

        6. Logo use: After the examination meets the requirements, the applicant is officially authorized to use the UL logo.

        image.png

        Please contact ZRLK for UL certification of heaters, and we will provide you with professional and efficient testing and certification services with favorable price and thoughtful service. If you provide us with product pictures and specifications, we will give the corresponding cycle, quotation and specific plan according to your products. Welcome to inquire!

        Related Articles
        • Gain a comprehensive understanding of EN 18031: Certification Requirements, Procedures and documentation Preparation

        • Analysis of the EU Network Security Standard for Radio Equipment EN 18031

        • New IATA DGR regulations in 2026: Interpretation of compliance points of state of charge (SoC) of lithium battery goods!

        • [Holiday Notice] 2025 ZRLK Mid-Autumn National Day holiday schedule

        Follow Us
        主站蜘蛛池模板: 丝袜视频国产在线播放| 亚洲精品高清国产一线久久| 国产特级淫片免费看| 亚洲视频一区二区在线| jizz欧美19| 狠狠色噜噜狠狠狠狠888奇禾| a亚洲视频| 日韩免费精品视频| 午夜专区| 女同性av片在线观看免费网站| 在线a视频网站| 国产美女一区二区| 性色浪潮| 国产无遮挡一区二区三区毛片日本| 免费观看又污又黄在线观看| 午夜福利92国语| 国产看女人洗澡毛片精品| 亚洲操片| 激情网av| 性欧美videofree高清精品| 日本久久久久久久做爰片日本| 久久久久久久久久久久国产精品 | 日本在线看片免费人成视频| 北条麻妃在线视频观看| 天堂视频中文在线| 日韩欧美亚洲在线| 亚洲精品久久久久中文字幕一福利| 人妻内射一区二区在线视频| 国产一区二区久久久| 亚洲成人精品一区二区| 久久精品15| 亚洲精品无码成人片久久| 亚洲午夜久久久精品影院| 福利网址在线观看| 色狠狠综合网| 午夜国产精品福利| 日本亚洲一区二区精品| 中日韩精品卡一卡二卡3卡| 69a∨色欧美丰满少妇| 欧美乱大交做爰xxxⅹ小说| 国产xxxx在线观看|