A Breakthrough Lock Technology for Door Handles

OOH, we've got science! Let's move on to the next topic: Doorknobs With Deadbolts might be better than the standard knob lock

The standard knob lock is what most people are familiar with when it comes to door locks. It has a round knob with a keyhole in the middle. To open it, you insert your key and turn it clockwise until it clicks into place. The keyhole holds onto the key so that you can't remove it until you've unlocked the door first

This works fine most of the time, but there are some problems with deadbolts. First off, they're more expensive than other types of locks (and they're often a bit harder to install). They also take up more space on the door jamb because they don't have a keyhole where other locks do — so if you want to leave room for other hardware like deadbolts, then you'll need to buy two different types of locks (which can get expensive if they're not made by the same company)

But most importantly, deadbolts mean that someone who breaks into your house can actually lock themselves out! This is because when someone uses an ordinary key to unlock the door from inside and then walks away with

door handles with deadbolts manufacturer


Freedom to dream "truly custom-made"

Doorwin provides one-stop solution for professional windows doors manufacturer and installation. We have been serving customers with our high quality and branded products in United States, Asia and worldwide.


Our team of experts will work with you to develop a bespoke plan that fits your needs. We take a holistic approach to the planning process, combining our technical expertise with our knowledge of customer requirements and project constraints.

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Doorwin is the manufacturer of full custom fenestration systems, and we're here for you. We provide you with the freedom to design your windows, doors, and more with no additional charge for special shapes, hardware styles, and color choices. Your vision is our inspiration; our job is to make it a reality.
Our products are made to pass your local inspector's verification and are built under USA building codes so you can rest assured that they are safe and sturdy. Choose Doorwin to experience the best bespoke fenestration service available today!

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From manufacturing to delivery on site

We take care of the entire process for you, from beginning to end. We have our own expertise and will provide free-charge design development & contract documentation with CAD and BIM drawings. In addition to elevation details and installation design, we will double-check that the products match the drawings and project specifications through video or pictures. We'll help you specify the delivery schedule and logistics service whilst keeping costs to a minimum.

The Safest Delivery

5 layers packaging guarantee 0 damage

We're proud to be one of the top exporters of windows and doors to the United States. We pack each window individually and in four layers, and finally into wooden boxes with non-fumigation, and at the same time, there will be a lot of shockproof measures in the container to protect your items. We ensure that your products will arrive at the sites in good condition after long-distance transportation.
Doorwin has been exporting tens of millions of dollars of windows and doors to the U.S. every year, and we know that improper packaging can cause breakage of the product when it arrives on site. What the client concerns, we concern most.

What Projects Can We Take?

We are tested by the following standards:
-NFRC (North American Fenestration Rating Council)
-AAMA (American Architectural Manufacturers Association)
-WNMA (Wood National Monument Association)
-CSA101 (Canadian Standards Association)
-I.S.2 (International Standard ISO/IEC 17025)
-A440-11 (Standard for Fire Testing of Door Assemblies for Charging Rooms)