High Efficiency Roof Exhaust Fan
DWT series roof exhaust fan
The characteristics
1,Wide range of application:DWT - I type axial flow roof fan, is suitable for the low pressure, large flow rate using occasion.DWT - II type centrifugal roof fan, is suitable for small air volume, high pressure occasion.
2,High efficiency , low noise,Light weight, corrosion resistance, smooth operation and long service life.
3,Medium temperature less than 60 °, excessive viscous substances are not allowed to be contained in the gas, dust content is less than 100 mg/m3
4,Type more, can satisfy different occasions to use, can according to user needs to provide other model fan.
5, Access to the national utility model patents and national outstanding patent award
Order Requirement
We will appreciate it a lot if you can offer us your product performance requirements and operation environment, so that we can customize optimal production to meet your every requirement.
1,Air volume.
2,Total Pressure or Static Pressure.
3,Voltage and Frequency.
4,Medium Temperature and Density.
5,Altitude of Operation Place.
product display
Usually we use plywood package or naked package. Some of the products like fan coil unit or table tennis board have standard carton package. The shipping terms are LCL, 20’ container, 40’ container

Before-sale services:
(1) Tell customers how to use our products and matters needing attention.
(2) Guide customers to choose the best and economic product, recover the investment within short time.
(3) Site inspection if you need.
In-Sale services:
(1)Quality control must be inspected strictly.
(2)In accordance with the agreements stipulated in the contract.
After-sale services:
(1) If the project needs our installation guidance, we can send our engineer and translator. We can also send customers installation video to teach them how to fix and operate with
our product.
(2) Usually, our product warranty is 18 months after leaving factory or 12 months after installation. within this months, all parts broken will be responsible for our factory.
(3) Regular contact with customer, consult with the customer feedback, come true with
the customer's two-way communication.
Shandong GRAD Group Co.,LTD is established in 1993, located in Dezhou Shandong, covering an area of 700 thousand square meters, with more than 2500 employees. The total capital is 925 million RMB, and annual output value over 2.5 billion RMB.During 20 years' development, GRAD Group concentrates on the central air-conditioning and compound material products and show the world a high-technological enterprise combining construction budget, technical consultation, products design, manufacturing and debugging service. There are 10 series, over 130 kinds of products covering the whole central air-conditioning series and the compound materials series products. The high standard workshop covering 350 thousand square meters.

GRAD sincerely welcome all friends visit


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