1. We are direct factory, best price will offer 2. Established in year 1997, with experiences, quality guaranteed,and years of experience in manufacturing and exporting 3. Factory visit welcome 4. With independent open mold capacity, all sorts of stamping parts can be manufactured according to customer's requirement, drawing, design or samples(OEM)
Development History of Iris Damper at Ningbo Aier Ventilation Equipment Co., Ltd
Ningbo Aier Ventilation Equipment Co., Ltd is the FIRST and ONLY manufacturer in China that can produce the full-size ranges of iris dampers from dia. 80mm to 800mm. We have developed the first iris damper in 2008. To comply with the strict airtightness requirements set by the European Union for its market, we had sent our iris damper samples to a Belgian testing institute BBRI (Belgium Building Research Institute) for performing the necessary airtightness test according to the EN 1751: 1999. It is our greatest satisfaction that all sizes of our iris damper have been certified with Class C airtightness. Therefore, firmly acknowledging and confirming the high quality and proscribed standards of our iris damper.
Packaging & Shipping
1.Can I get free samples? Yes. We can offer you free samples but you need to bear international courier cost.
2.Usually what is your delivery time? But our delivery time is 30days. But the delivery time of this product is interrelated to the quantity very much. So please check the delivery time with us before order placement.
3.Can I place the order directly online Alibaba? Yes. We are paid gold member capable of trade assurance orders online. You can place the order both online or offline.
4.Can you make products according to our own design? Yes. This is also our strength. We have a big series of production facilities which can turn your idea/design into real products.
5.How do you guarantee the quality? We make 100% inspection from material to finished products. We can also provide pre-shipment inspection report.