This standard applies to the safety of box type foot warmers with a rated voltage not exceeding 250V, used for human foot heating and covered during use. The following normative references are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document. GB 4208 Degrees of Protection Provided by Enclosures (IP Code) GB 4706.1 Safety of Household and Similar Electrical Appliances Part 1: General Requirements GB 4706.23 Safety of Household and Similar Electrical Appliances Part 2: Special Requirements for Indoor Heaters GB 4706.80 Safety of Household and Similar Electrical Appliances Special Requirements for Foot Warmers and Hot Pads GB/T 2423.55 Environmental Testing for Electrical and Electronic Products Part 2: Test Methods Test Eh: Hammer Test GB/T 5169.11 Fire Hazard Test for Electrical and Electronic Products Testing Methods, Glow Wire Testing of Finished Products, and Guidelines GB/T 5169.21 Fire Hazard Testing for Electrical and Electronic Products - Part 21: Abnormal Hot Ball Pressure Testing GB/T 12113 Measurement Methods for Contact Current and Protective Conductor Current GB/T 16935.1 Insulation Coordination of Equipment in Low Voltage Systems - Part 1: Principles, Requirements, and Tests GB/T 17627.1 High Voltage Testing Techniques for Low Voltage Electrical Equipment - Part 1: Definitions and Test Requirements
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China