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...

  ASTM is a mandatory certification of toy testing in the United States. Whenever the toy products are exported to the United States, they need to do ASTM testing. ASTM F963 Is a toy testing standard developed by the National Department of Standards of the United States. The latest version is ASTM F963-17 and has become a mandatory standard on September 01,2017. American Toy Safety Test ASTM F963 Standard details: 1. Supplement some references to food and cosmetics, mainly standard methods for microbiological testing, CFMethods M-1, M-2, M-3 and M-6; USP Volume 35 Methods 61, Methods 62 and Chapter 1231; and FDA's Microbiological Analysis Manual. 2. Supplement the key instructions on the inadvertent omission of ejection toys in 2016 edition, indicating that KED (kinetic energy density) is only suitable for ejection and arrow toys with kinetic energy above 0.08J. 3. Revision of some relevant test details such as low-power circuit in electric toy testing. 4. Add and make it clear tha...

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

  Relative to the international standards, the American UL security standards have their own system, which are very different from the international standards. Nowadays, there are 5 safety standards for household appliances coordinated by UL and IEC, namely: UL 60335-1 (general safety), UL 60335-2-3 (electric iron), UL 60335-2-8 (electric razor, electric shear), UL 60335-2-24 (refrigerator, ice machine), UL 60335-2-34 (motor-compressor) The main differences between the UL standards and the IEC standards are: Different requirements for electric shock protection and fire prevention: IEC standard is based on the AC voltage of 220~240V, the design requirements for electric shock protection are high, that is, the electrical insulation performance and electrical clearance of materials and structures are strict; and the voltage of North American electrical appliances is 110~120V, plus the building structure is mostly wood, so the UL standard in fire protection requirements are relatively ...

Optical performance is a big index, it is composed of solar energy transmittance ,   solar reflectance, solar absorption rate, visible light transmission rate, visible light reflectance, total solar barrier rate, ultraviolet barrier rate, shielding coefficient, U-value and other small indicators. Light on paper, plastic, glass, metal and other materials show a normal reflection, but the amount of reflection is different. primary coverage: 1. refractive index 2 .   Dispersion and dispersion coefficient 3. Birefringence and very-optical refractive index 4 .   reflection and reflection coefficient 5. Full reflection 6. Absorption coefficient 7. Scattering General test: 1. Self-focus of light: A parallel intense beam enters the medium (similar to that through a convex lens). 2. Self-induction and transparency of light: After a short pulse of strong light enters the medium, the medium hardly absorbs its energy (almost transparent). 3. Optical bistability: After the strong ligh...

Composite salt spray test is also called cyclic corrosion test. Cyclic corrosion test (cct) is mainly used in the automotive industry, on the basis of constant salt spray test introduced the high temperature, humidity, low temperature, drying parameters, as far as possible to consider many factors in the natural environment, aims to achieve higher correlation with the natural environment test results. The purpose of the composite salt spray test is to confirm the ability of the objects to be tested to tolerate the salt spray environment, and to use the mutual circulation of salt spray and moisture to simulate the actual use environment. It is suitable to evaluate the electrochemical corrosion effect of metallic materials and salt particles. Composite salt spray test usually consists of three parts: salt spray test stage, moisture test stage and drying test stage. Salt spray test stage: Generally speaking, in addition to naCl, the electrolyte containing other chemicals can also be used ...

  Salt spray test is a commonly used environmental simulation accelerated corrosion test method, which is mainly used to evaluate the corrosion resistance of metal materials and their coatings, coatings, paints and other surface treatment processes. This test accelerates the corrosion process on the material surface by simulating the corrosion conditions in the Marine environment or industrial atmosphere, in order to assess the corrosion resistance of the material in a short period of time. Main test items: salt spray test (neutral, acetic acid, copper accelerated acetic acid), cyclic corrosion test, condensate water, water mist, etc.

  C-tick is the electromagnetic compatibility component of Australia, regulated by theAustralia Community Association, and currently only controls the interference part, with the products being enforced from 1 January 1999. C-TICK Certified Product Classification: Under the Australian EMC system, the products are divided into three categories. Suppliers must apply for the C-TICK mark before selling the second and third category products. Class I products: products with low interference radiation for devices using wireless spectrum, such as manual switches, simple relays, one-way cage inductor motor, resistance, etc. Such products can voluntarily apply for the c-tick mark during production and sale. Class II products: products with high interference radiation for wireless spectrum equipment, such as switching power supply, welding machine, dimmer, most household appliances, etc. Class III products: products with very high interference to devices using wireless spectrum, namely produ...

  Australian RCM Registration is a mark of compliance for electrical and electronic products in Australia and New Zealand, demonstrating compliance with electromagnetic compatibility, electrical safety and RF regulations.

  Airbags require CE pyrotechnic instruction certification because they belong to pyrotechnic devices and involve chemical reactions and gas expansion. CE certification ensures that products meet European safety, health and environmental standards and is essential for access to the European market. This helps to ensure consumer safety, enhance manufacturers' responsibility and market trust, while ensuring that the environmental impact of the product is minimized.

  SRRC Certification is a mandatory certification of radio transmission equipment in China to ensure its spectrum use compliance and avoid interference. Products required for certification include: 1. Wireless communication equipment: mobile phones, routers, Bluetooth headset, etc. 2. Wireless remote control: toys, drones. 3. Wireless microphone and amplification system. 4. Radio navigation equipment. 5. Radio intercom. 6. Radio broadcasting and transmitting equipment. 7. Other radio-spectrum equipment. It shall not be sold and used in China without SRRC certification.

  1. The EU RoHS Directive 2015 / 863 / EU is the core regulation of the RoHS certification, which sets limits for 10 harmful substances. 2. IEC 62321:2008, the Determination of Hazardous Substances in Electrical and Electronic Products, is an important technical reference standard for RoHS testing, and specifies the sampling and testing methods of different harmful substances. 3. EN 50581:2012, The Compliance Assessment of Hazardous Substances Limit in Electrical and Electronic Products, is an important basis document to judge whether the product meets the RoHS directive. 4. IPC-1752A: The standard specifies the labeling requirements of the RoHS certified products, including the location and size of the RoHS marks on the product and the labeling content of the components. www.uni-lab.hk/

Suitable for external lighting, signal devices and automotive lamp shell protection, can provide realistic analog electronic products and their components during the transportation and use of the spray test may be subjected to water and other environment, to detect the waterproof performance of various products. Common operation mode 1.Preparation: First, select a test device that can simulate the real rainfall conditions. A spraying system or spray device can be used to ensure a uniform and continuous flow of rainwater. 2.Sample preparation: Cut the material to be tested into the appropriate size, usually square or rectangular. Ensure that the edges of the sample are flat, with no obvious defects. 3.Install the samples: attach the sample to the device to ensure full level and withstand rain. 4.Adjust test parameters: adjust the operating parameters of the shower, such as flow and spray Angle. 5. Experimental: turn on the shower and start the experiment. Usually the experiment lasts fo...

The vibration test methods can be divided into sinusoidal vibration and random vibration: Sinusoidal vibration is often used in the laboratory test method, to simulate rotation, pulsation, shock (in ships, aircraft, vehicle, space aircraft) on the vibration and the resonance frequency analysis of product structure and little note to pick up card is given priority to, it is divided into two kinds of sweep vibration and fixed frequency vibration, the harsh degree depends on the frequency range, loss amplitude, test duration. Random vibration is assessed as the seismic resistance strength of the overall structure of the fire module product and the delivery environment in the packaging state, and its severity depends on the frequency range, GRMS, test duration and axial direction.

  AS / NZS 3112 Test Standard: AS/NZS 3112: 2017 The standard specifies the most basic safety requirements for Australian plugs and sockets with a rated ultra-low voltage of 32A for domestic and similar purposes. test item: 1. Terminal and internal connection and pin; 2. Insulation material, no removable plug; 3. Entry mode and wire buckle of the power supply cord; 4. Hand holding parts and internal connection; 5. Rating value and size of the low-voltage plug; 6. Ground connection mode and fuse; 7. Test of logo and plug; 8. Terminal and internal connection, no arrangement mode; 9. socket connecting piece, socket structure; 10. Size and grounding connection mode; 11. Prevent contact with live body and desktop installation socket; 12. Ground socket, socket with switch; 13. Test of outlets, marks and signs, and outlets with protective doors.