Shenzhen United Testing Technology Co., Ltd

  The Amazon CPC certificate is a certification document indicating that children's products sold in the US market must comply with the requirements of the US Consumer Goods Safety Improvement Act (CPSIA) and should be provided by the manufacturer or importer. The CPC certificate proves that the product has passed the necessary tests and complies with all applicable child product safety rules. The CPC certificate test items usually include: Physical and mechanical testing Flammability test chemical test Labbel and warning language tests Electrical safety test Radiation test The CPC certificate must contain details of the product, test results, applicable regulations and standards, and contact information for the manufacturer or importer. If the product does not have a CPC certificate or the certificate does not meet the requirements, Amazon may prohibit the product from being sold on its platform. www.uni-lab.hk/ hofferlau@uni-lab.hk

  Lamp reliability Salt spray test is an environmental test used to assess the corrosion resistance of lamps and their materials in a salty wet environment. This test usually simulates the corrosion conditions in a marine environment or an industrial polluted environment to ensure that the lamp can resist corrosion in practical use and maintain its function and appearance. During the test, the lamp sample is placed in a closed test room, where a certain concentration of saline solution is continuously sprayed to form a salt spray. Testing usually lasts for a certain period of time, depending on the test requirements and product standards.

  Tensile Testing Machines is a kind of instrument used for measuring the geometric parameters of materials (metal, plastic, fiber, etc.) and static dynamic mechanical characteristics under tensile load. Tensile testing machines through the opening of the sample across (to determine the size and shape according to the standards or specifications), with the tensile strain stress into meaningful numerical results, in order to accurately judge and analyze the tensile properties of various materials. Now let's take a look at the steps of using the Tensile Testing machine The use steps are as follows: Preparation: fix the material sample to be tested on the test machine, and adjust the fixture and sensor of the test machine. Set test parameters: set mode, speed, range for testing. Start the test: Start the test, the test machine will apply force to the material, and record the test data. End test: After the test, stop the operation of the test machine and save or print the test data. Da...

EN50332 is divided into two parts, EN5032-1 and EN50332-2 .   A nd EN50332-2 is divided into EN5032-2-1 (player output voltage) and EN5032-2-2 (headset Broadband characteristic voltage test). The EN5032-1 includes the maximum sound pressure level measurement, for the performance of the player and the headset, the EN5032-2 includes two tests of the maximum output voltage and the broadband characteristic output voltage of the headset. Test requirements   of EN50332: 1. The product shall be tested in the silent room to avoid interference from environmental noise. The headphones are mounted on standard artificial ears, and the microphone is mounted to collect the sound of the headphones. Audioanalyser a nalyze and record the maximum sound pressure value (LAeq) for each audio. The standard sound source used in the test is the IEC60268-1. 2. The signal intensity of audio products playing digital signal (CD, DVD, MP3) is - 10dB, and analogue signal cassette is-6dB. The FM radio requi...

  Common performance testing items: Main flight parameters: maximum flight altitude, maximum endurance time, flight radius, maximum horizontal flight speed, track control accuracy, manual remote control distance, wind resistance, maximum climbing speed, etc EMC testing standards: GB / 17626-2006 electromagnetic compatibility series standard GB / 9254-2008 Radio harassment limits and measurement methods for information technology equipment GB / T17618-2015 IT equipment immunity limits and measurement method Information security detection: 1. GB / T20271-2016 General security technical requirements for information security technology information system 2. YD / T2407-2013 Technical requirements for mobile intelligent terminal security capability 3. QJ20007-2011 General specification for satellite navigation and navigation type receiving equipment Safety regulation testing standards: GB16796-2009 Safety requirements and tests of safety prevention and alarm equipment