This standard specifies the terms and definitions, classification and naming, technical requirements, test methods, inspection rules, markings, packaging, transportation, and storage of membrane electric heating elements for household and similar purposes. This standard applies to membrane heating elements for household or similar electrical appliances with single-phase voltage not exceeding 250 V and three-phase voltage not exceeding 480 V. Note:; The membrane electric heating elements applicable to this standard include metal based ceramic slurry electric heating elements, glass tube tin oxide film electric heating elements, and mica based tin oxide film electric heating elements. The relevant requirements for membrane shaped electric heating components of material systems such as carbon based slurry, carbon fiber, metal film, and conductive polymer materials are being considered. 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 4706.1-2005 Safety of Household and Similar Electrical Appliances Part l: General Requirements GB/T 15470-2002 Performance Test Methods for Household Direct Acting Room Electric Heaters
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