Haohai, we recognize the need for pre insulated duct cutting machines in bulk buyers. Durable material, our ducts are built to last and resistant to heavy-duty abuse. Whether you are looking for ducts that work for HVAC systems or industrial applications, Haohai has the answer to your problem.
In the PU duct, quality is the most important. And this is why, at Haohai, we are committed to supplying top-of-the-line ducts — all at a price that just can't be beat. Hundreds of thousands of our ducts are at work beating the demands for performance and efficiency, making our product an ideal choice with suppliers to whom these parameters are important.

The largest difference with Haohai from other manufacturers is the fact that we are capable of being highly customizable. We realize that each customer has different requirements, and so we present the option of sizes, shapes as well as configurations. Haohai have you covered for either a standard size duct, or we can manufacture a bespoke solution.

Here at Haohai, we understand the importance of time and its effects on wholesale purchasing. This is the reason why vahdam guarantees you fastest delivery services. Regardless of whether you are situated locally or in an international location, we assure our local and overseas clients same day delivery for PU ducts. When you order from Haohai, you can rest easy that your package will be delivered in perfect shape and ready to go.

Lastly, Haohai stands behind their product with a team of seasoned customer service professionals to answer all inquiries and address any concerns. Whether you require aid with product choice, personalization options or anything in between, our team is here to assist. We strive to give our wholesale buyers a wonderful service and make an effort to have your experience with us as well managed and hassle free as possible.
Our primary products include Duct Panel, PU foam, pu duct, polystyrol foam, multi-purpose spray adhesive foam as well as personal care such as home care, car care aerosols. We are currently developing OEM products for well-known firms across the globe.
Haohai was established in the pu duct of August 2000, has continued to maintain its fast and steady expansion. It has also become a "Advanced Enterprise and Civilized Unit for Technology Innovation" and received the ISO9001:2015 quality certification for its system. Our products are of a high quality as we have a reliable quality management system and modern equipment, and a highly skilled staff.
Our products are pu duct using highest quality materials They are superior to their competition in terms of strength and performance deeply trusted by both domestic and foreign customers
Our service is pu duct and observant Our customer service team is highly trained to resolve any customer's issue The well-known customer service and technical support allows us to deliver a top-quality service