Shenzhen United Testing Technology Co., Ltd

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...

  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.

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.

1. Electromagnetic compatibility (EMC): harassment power, radiation harassment, terminal harassment voltage, electrostatic discharge immunity, electromagnetic radiation immunity, conduction immunity, etc. 2, low voltage part (LVD): harmonic current, voltage fluctuation and flicker, current intensity, instantaneous voltage, etc.

The purpose of low temperature test is to test whether the product can be stored and controlled in a long-term low temperature environment, which is to determine the adaptability and durability of military and civilian equipment for storage and work at low temperature conditions. Physicochemical properties of materials at low temperature. The standard has specification requirements for pre-test treatment, initial test test, sample installation, intermediate test, post-test treatment, heating speed, load condition of the temperature cabinet, and volume ratio of the measured object to the temperature cabinet. Failure mode of specimen under low temperature condition: the parts and materials used in the product may be cracked, embrittlement, movable part stuck, and characteristic change at low temperature.

  -Valve-controlled lead-acid storage battery (IEC / EN60896 / GB19638) -Starting type lead-acid battery (IEC60095 / GB / T5008) -General-purpose battery pack (IEC / EN61056) -Traction storage battery (IEC/EN60254/GB/T7403.1-2008) -Nickel-metal hydrogen (cadmium) battery (IEC / EN61951 / GB22084) -Primary cell (IEC60086), etc

Intelligent lock is a kind of lock integrating electronic technology, mechanical technology and network technology. Compared with the traditional mechanical lock, it has been improved in security, convenience and intelligence. Intelligent   lock in the process of continuous development, its networking way is also constantly changing.   At present, the common networking ways of smart locks on the market mainly include: Wi-Fi, Bluetooth, Zigbee, NB-IOT, etc. Intelligent   door lock needs to be RF tested in a professional wireless laboratory, our laboratory has passed the CNAS and A2LA recognition, can do the EU CE-RED, American FCC-ID, Canada I C -ID and Japan TELEC certification.