- Overview
- Product Parameters
- Detailed Photos
- Company Profile
- FAQ
Basic Info.
Product Description
Product Parameters
| Model | HD-1000 | Closing Force | EN7 |
| Applicable Door Weight | ≤1000kg | Warranty Period | 10 years |
| Applicable Door Width | ≤1800mm | Speed Adjustment | Two-stage |
| Hold Open | 90°and 130° | Installation Adjustment | All around,up & down |
| Opening Angle | 360° | Closing Speed Adjustable | applied |
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Product Features
1.Suitable for all kinds of super-heavy framed door and extra heavy duty center revolving door.2.EN7 High-efficiency closing force, small opening force and large closing force.
3.Two million times of use without deformation,10 years long quality guarantee.
4.The axis can be adjusted all around,up & down, with a wide range of adaptation. Product Dimensions
Feature Detail 
Why choose us
1. The world's biggest floor spring manufacturer in China.Daily productionover 15,000PCS
2. The factory has three production base located in ZHEJIANG ,ANHUI,JIANGSU three province. The area cover 72,000 square meters.
3. Over 33 years producing experience. Ripe production process.
4. Impeccable testing system covered from raw material,components,semi-finished products.
5. HAIDA has own national test laboratory (Intertek Satellite Lab)to make sure the growth of our company.
Some engineering cases
Exhibition
Workshop & Lab
Producton Process
Certification 
FAQ
Q: What is the minimum quantity ?
No MOQ,We can sell even 1PCS
Q: How long is the delivery time?
10 to 30days,depend on your order quantity
Q: Can you send samples before place the order
Yes,sure.we can provide samples for quality checking.
Q: Do you provide OEM service?
Yes,we do
Q: How about the payment terms ?
T/T,D/P,L/C,Paypal,Western union and cash all acceptable.
Q: How about your quality warranty?
When the products got problem during our warranty period,we will provide
