Electric shaver: A cosmetic appliance that uses electricity to drive a blade and shave beard and sideburns. It was introduced in the United States in 1930. Electric shavers are divided into two types according to the blade action mode: rotary and reciprocating. The former has a simple structure, low noise, and moderate shaving force; The latter has a complex structure and high noise, but has a strong shaving force and high sharpness. Rotary electric shavers can be divided into several types according to their external structure: straight tube type, elbow type, electric push shear type, and double head type (see figure). The first two structures are relatively simple, while the latter two are more complex. Electric shavers can be divided into three types according to the original machine type: DC permanent magnet motor type, AC DC dual purpose series excitation motor type, and electromagnetic vibration type
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