Testimonial from a Customer in
North California Bay Area

Project Introduction

At Doorwin, we take pride in delivering high-quality and innovative windows that meet the demands of today's market. Our tilt and turn windows are a perfect example of this commitment to excellence, and we recently received a very positive feedback video from a customer in San Francisco Bay Area.

The customer, who is a builder, has worked with us multiple times before and was impressed with our ability to offer quality European-style tilt and turn windows in the US market, which is dominated by normal casement windows. He emphasized the superior sealing performance of our tilt and turn windows compared to other window types in the market.

Tilt and turn windows are designed with easy cleaning and maintenance in mind. They can be opened in two ways: tilted inward from the top for ventilation or swung inward from the side for full access to the exterior. Doorwin uses all German-imported multi-point locking system and durable hardware to ensure the security and longevity of our tilt and turn windows.

This project used our triple-pane tempered glass and thermal break aluminum materials, which provide excellent thermal insulation, soundproofing, and durability. The triple-pane glass, with its two layers of Low-E coatings, which has a 0.24 U-factor and is certified by both NFRC and Energy Star for its energy efficiency. helps to reduce energy consumption, improve indoor comfort, and minimize outside noise. We took the top-quality raw materials of thermal break aluminum frames, which have a polyamide barrier between the inner and outer layers, prevent heat transfer and condensation, making them suitable for various climate conditions.

We are thrilled to receive such positive feedback from our valued customers and will continue to provide top-quality products and services to meet the needs of our clients. Now, more and more contractors and builders are choosing Doorwin for our commitment to top-quality products at a competitive price. We are dedicated to providing the best customer service and solutions for all your needs. Contact us today to learn more about our products and how we can help you achieve the perfect look and performance for your home or project.

Feel free to contact us any time about your ideas

Doorwin's MultiMate Mulling System

With our new MultiMate Mulling System patent, we've made it easier than ever for our clients to connect multiple windows together to create a larger window system. Our unique mulling system allows for seamless integration between windows, creating a smooth, clean line that enhances the overall look and feel of the window system.

The MultiMate Mulling System is designed to be easy to use and install, with a simple, intuitive interface that makes it easy to connect and disconnect windows as needed. The system is also built to be durable and long-lasting, ensuring that our clients can enjoy the benefits of a seamless window system for years to come.


We take pride in providing our customers with top-quality windows and doors that meet the highest standards of performance and durability. Our commitment to quality is reflected in our use of the best materials, such as fully tempered glass and high-quality hardware from reputable German brands. We believe that our customers should never have to compromise on quality, and that's why we offer a 10-year warranty on our products‘ hardware parts. In addition, our TPS glazing technology ensures that our insulated glass units are free from air leakage and fogging issues, backed by a 25-year warranty.

Don't just take our word for it - our customers have been thrilled with the quality of our products and service, and we have the testimonials to prove it. We are proud to have built a reputation for excellence in the industry, and more and more contractors and builders are turning to us for top-quality windows and doors at a competitive price. In addition, we understand the importance of investing in high-quality windows and doors for your home. With our Worry-Free return guarantee, you can rest assured that your satisfaction is our top priority. If you encounter any quality disputes, we'll take care of the refund for you, all products purchased during our March sales event with an order value under 2000 USD are eligible for a free return guarantee.

Don't let concerns about quality hold you back from taking advantage of our unbeatable prices. Shop with confidence, knowing that you can trust Doorwin to deliver the best products and service possible.

Factory-Direct Pricing

At Doorwin, we understand that cost is one of the biggest concerns for our customers. That's why we're committed to providing transparent pricing for all of our products. Our pricing is straightforward, and what you see is what you get. There are no hidden fees or additional costs to worry about.

We understand that our customers may compare our prices with local manufacturers. That's why we're confident in the value that we offer. We're proud to say that we can offer top-quality products at a fraction of the price of local merchants in Europe and America. Our products are manufactured in our state-of-the-art facilities in China, where we've invested in cutting-edge technology and streamlined production processes to ensure that we can offer our customers the factory-direct value.

We believe that our commitment to quality and transparency sets us apart from other manufacturers. We want our customers to feel confident in their purchasing decision, knowing that they're getting a high-quality product at a fair price. So whether you're looking for windows, doors, or any other products, you can trust Doorwin to provide you with the best possible value.

Design Assistance Service

In addition to providing top-quality windows and doors at affordable prices, we also offer design assistance services to help clients accurately control their budgets. Our expert team can analyze your overall plan and provide a schematic design that helps determine which products fit within your cost parameters. We understand that cost is often a primary concern, which is why we offer recommendations such as using lower-cost products in inconspicuous locations to reduce the overall budget. For example, if a room is not exposed to long periods of sunlight, we may recommend not using Low-E glass. In unimportant rooms such as toilets or storage rooms, we may suggest using PVC or aluminum windows instead of solid wood windows. Our goal is to ensure that our clients can achieve their design vision while staying within their budget.

Thank you for taking the time to learn more about Doorwin and our commitment to providing top-quality windows and doors at unbeatable prices. We believe that every project is unique, and we are dedicated to working closely with our clients to help them achieve their vision while staying within their budget. If you have any questions about our products or services, please do not hesitate to contact us. Our team of experts is always ready to assist you in finding the perfect windows and doors for your project. Thank you again for considering Doorwin as your trusted partner.

Not only did we have a great time at the show, but in the next two months, our experts will be traveling throughout the United States to do site visits and full technical guidance service for our customers. If you were not able to attend the show but are still interested in our products, feel free to contact us and our experts will still be able to provide on-site services. There are more special offers waiting for you, so come and contact us!