The clauses in the following documents are referred to as provisions of this standard through normative references. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. However, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. GB/T 2423.4 Basic Environmental Testing Procedures for Electrical and Electronic Products, Test Db: Alternating Humidity Heat Test Method (GB/T 2423.4-1993, eqv IEC 68-2-30:1980) GB 3836.1-2000 Electrical Equipment for Explosive Gas Atmospheres Part 1: General Requirements (eqv IEC 60079-0:1998) GB 3836.2-2000 Electrical Equipment for Explosive Gas Atmospheres Part 2: Flameproof Type "d" (eqv IEC 60079-11990) GB 3836.3--2000 Electrical Equipment for Explosive Gas Atmospheres, Part 3: Increased Safety "e" (eqv IEC 60079-7:1990) GB 3836.4--2000 Electrical Equipment for Explosive Gas Atmospheres, Part 4: Intrinsically Safe "i" (eqv IEC 60079-11:1999) GB/T 10233-2005 Basic Test Methods for Low Voltage Switchgear and Control Equipment GB 14048.1-2006 Low Voltage Switchgear and Control Equipment Part 1: General (IEC 60947-1; 2001, MOD) MT/T 154.18 Method and Management Measures for Model Selection of Electrical Equipment Products Used in Coal Mines
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