I.Applications:
It is applicable to such test as experiment and detect for high/low temperature or damp heat environment in industrial and mining enterprises as well as in laboratory and scientific research institute.
II.Feature:
1.The working chamber si made of stainless steel and has circle arc shape ,which is easy to clean
2.Whole close compressor is French ,which run sreadily and reliability.
3..Intelligent temperature controller is based microprocessor with PID parameters controlling function .Digital display of set and actual temperatures. High temperature controlling accuracy and reliability
4.Air circulation system is consisted of low-noisy fan and optimal air duct, reaching a uniform temperature inside the working chasmber.
5.There is a 30mm-diameter testing hole nearside the chest, which is applied by the testing power line and signal line.
6.The chamber also can use the printer.,
III. Specifications :

Model	GDH-2005A(B.C) GDHS-2005A(B.C)	GDH-2010A(B.C) GDHS-2010A(B.C)		GDH-2025A(B.C) GDHS-2025A(B.C)		GDH-2050A(B.C) GDHS-2050A(B.C)
TemperatureControl range	A:-20 ～ 100℃,B:-40 ～ 100℃,C:-70 ～ 100℃
Humidity control range	40 ～ 98 ％ RH （ GDHS ）
Temperature fluctuation	±0.5℃
温度均匀度	±2℃
升温时间	-40 ～ 100℃≤60min
降温时间	25 ～－ 40℃≤90min
Mains voltage	A.B:220V,50Hz C:380V,50Hz		A:220V,50Hz B.C:380V,50Hz		380V,50Hz
Dimensions of working chamber	350×320×450mm		400×500×500mm		600×550×750mm		700×800×890mm
安全装置	压缩机过热，风机过热，压缩机超压，缺相，过载，超温，缺水等各项保护功能

Shanghai Jing Hong Laboratory Instrument Co.,Ltd. Founded in 1996. At the same year,we researched and developed the four famous series “DHG series Heating and Drying Oven”, “DNP series Thermostatic Incubator ”, “DZF series Vacuum Drying Oven” and “DK series Thermostatic Water Bath”. Keeping on research and development of new technique and products, we also focus on quality consciousness of the staff to improve the quality of the products. We obtained the License of production Enterprise of Medical Apparatus, the ISO9001:2000 International quality system authentication, and CE Certification since 2000. Our products are on a good sale in domestic market, and about 20% of our products are exported ,At the 2002, we invest RMB10,000,000 in purchasing lanb of 22 ma, so as to establish first project of new workshop at 7000 square meters and plate manufacturer . In this way, we can start the mass production ourselves.

At present, our products cover 8 categories, 37 varieties and 152 specifications, Our company has lots of talent staffs specialized in design, produce, sale and service. All of us are trying our best to establish the famoud brand in laboratory instruments field.