This Damper regulator is used in conjuncation with the square rod. Just twisting the wing nut and moving the handle to turn the damper blade which inside the air duct to control the air flow for HVAC

Cangzhou Ruichi Hardware Manufacturing Co., Ltd. is located in Cangzhou city, Hebei province, which is near to Beijing. It is a professional manufacturer and supplier of spare parts specializing in stamping, sheet metal, CNC machining, chasis and cabinets, all kind of tension ,torsion ,compression ,extension springs . The products are widely used in automobile, furniture, construction, electrical appliances, packaging, rail transportation and other industries. With rich production experience and good service and reputation, to provide quality products and services for related industries.

 We could meet different requirement to the materials such as stainless steel, 65Mn,  alloy steel, pickling plate, galvanized sheet, aluminum  plate, copper plate so on, to provide fast, stable and reliable OEM services for the customers.

1. How to start OEM orders?

Send drawing or sample - get price - pay - make mold - confirm sample - mass production - payment -delivery.

2. What are your terms of payment?

We accept t/T, l/C, trade assurance, credit card, Western Union, etc

3. Can you customize the packaging?
The logo, carton and pallet can be customized.

4. How do you guarantee the quality of your products?
Better control from raw materials, production, processing, packaging, storage until to shipment. And we passed the ISO9001 quality management system certification.

5. What kind of payment terms you use for ship the gods?
We support FOB, CIF, CFR, DDU, DDP and so on, we have very rich experience ship gods directly to customer's plant.
6. After-sales.
Quick response day and night.