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Contact us
Headquarters Tel: 0769-3882-6678
Business Consulting: 0769-3882-6677
Fax: 0769-3882-6679
Address: NO.17,General Headquarter 2nd Road,Songshan Lake National High-tech Industrial Development Zone Dongguan City,Guangdong Province,China

Environmental Test

Introduction of Environmental Tests

Environmental test is a method for testing quality of raw materials, semi-finished products and
finished products by simulating various environmental climates for verifying if materials and
products reach the quality objectives expected in R&D, designing, and manufacturing by
various environmental testing equipments. It is widely used in different fields, such as aviation,
aerospace, military, shipbuilding, electrical industry, electronics, medical industry, photovoltaic
industry, lighting industry, petrochemical, and automobile, etc. The main applications of
environmental tests in enterprises are in research test, stereotype test, production inspection test,
product acceptance test, safety test and reliability test.
Environmental Main Test Items and Applicable Standards

Environmental Test Equipment

Constant temperature and humidity chamber

Quantity: 50pcs;
Volume: 225L, 408L, 1000L, 4m³, 8m³
Temperature range: -70~+200℃
Humidity range: 10~95%
Rate of heating and cooling: heating rate: about 3℃/min;
cooling rate: about 1℃/min

Test projects: high temperature, low temperature, high and low temperature cycle, damp heating test, constant humidity and heating test

8m³ Walk-in temperature and humidity chamber
Temperature range: -40~+150℃
Humidity range: 20~95%
Rate of heating and cooling:heating rate about +3℃/min;cooling rate: about +1℃/min

Thermal shock chamber(two-box with lifting cage)
Quantity: 6
Volume: 80L, 150L, 270L
Temperature range: -55~+150℃
Temperature conversion time: ≤5 sec

2m³ Two-box thermal shock chamber (left-right sliding basket)
Temperature range: -55~+180℃

Volume: 2m³
Temperature conversion time: ≤5sec

Three-box Thermal Shock Chamber

Quantity: 3
Volume: 80L, 400L
Temperature range: -40~+150℃
Temperature conversion time: ≤3sec
Rapid temperature change chamber(ESS Rapid temperature change chamber (ESS stress screening) is mainly used stress screening)
Quantity: 6
Volume: 225L, 408L, 1m³
Temperature range: -50~+150℃
Rate of temperature change (linear) :
1m³ (≤25℃/min)
High and low temperature low pressure test chamber
Chamber dimension:1000*1000*1000mm
Temperature range: -50~+150℃
Pressure range: 常压~0.5Kpa
Voltage dropping time: ≤45min(normal pressure~1Kpa)

Ultraviolet photoaging chamber

Temperature range: -10~+70℃
Humidity range: 50~95%
Chamber dimension: 1140x500x500mm
Irradiance range: ≤1.0W/m2
Lamp type: UVA340/UVB313/UVA351
Solar Radiation

Temperature range: 10~70℃
Humidity range: 50~95%
Chamber volumn: 512L
Irradiance range: (wavelength 280~800nm): 0-
1200±15% W/m2;
Irradiance range (wavelength 340nm): 0-0.7 W/m2
Irradiance range (wavelength 420nm): 0-1.1 W/m2

Environmental reliability test chiller for chilling components (new energy vehicle motor controller, battery management system)
Temperature range: -40 ℃~+120 ℃
Low temperature chiller: -40 ℃~+40℃
High temperature chiller: +40℃~+120 ℃
Chilling power: 20KW
Max. velocity: 6m³/H
Temperature fluctuation: ±1℃

Testing Lab
About DDT
Contact us

Business Consulting: 0769-3882-6677 Headquarters Tel: 0769-3882-6678

Fax: 0769-3882-6679 E-mail:

Company address: Building B, No. 17, General Headquarters 2nd Road,Songshan Lake National High-tech Industrial Development Zone, Dongguan City,Guangdong Province, China

Tianjin Dongdian Testing Service Co., Ltd                    Tel:022-58038033

Tianjin Address:Building D, No. 19, Wei 4th Road,Microelectronics Industrial Zone,Tianjin Development Zone.

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