
Casement Lock
Sash Window Locks
A window lock is also named sash lock to lock or unlock doors for security.
Although it is a very common and simple item which you could purchase from suppliers all around the world. However, after purchasing once or twice, you might find the quality does not meet your customers’ standard, or you are frustrated about the complaints received every day... In this case, D&D will become your best solution, we will provide the most reliable and stable items for you.
Could you please share your drawings with us? And also advise the material, quantity, finish...
We will evaluate and provide the price which you will be satisfied with.
Transom Window Latch
WL-01
Our WL-01 is a common item which was used in worldwide, the traiditional and simple design...
DetailsTransom Window Latch
WL-02
Our WL-02 is a common item which was used in worldwide, the traiditional and classic design...
DetailsSliding Window Lock
WL-11
The Sliding Sash Lock could keep the window secure, and as a sliding sash lock installed, you might...
DetailsSliding Window Lock
WL-12
The Sliding Sash Lock could keep the window secure, and as a sliding sash lock installed, you might...
DetailsSliding Window Sash Lock
SL-01
It is Zinc Die Casting Sliding Window Sash Lock, with a painted finish.
DetailsSliding Window Sash Lock
SL-02
It is Zinc Die Casting Sliding Window Sash Lock, with a painted finish.
DetailsSliding Window Sash Lock
SL-03
It is Zinc Die Casting Sliding Window Sash Lock, with a painted finish.
DetailsSliding Window Sash Lock
SL-04
It is Zinc Die Casting Sliding Window Sash Lock, with a painted finish.
DetailsSliding Window Sash Lock
SL-05
It is Zinc Die Casting Sliding Window Sash Lock, with a painted finish.
DetailsSliding Window Sash Lock
SL-06
It is Zinc Die Casting Sliding Window Sash Lock, with a painted finish.
DetailsSliding Window Sash Lock
SL-07
It is Zinc Die Casting Sliding Window Sash Lock, with a painted finish.
DetailsSliding Window Sash Lock
SL-11
It is Zinc Die Casting Sliding Window Sash Lock, with a painted finish.
DetailsTired of Receiving Quality Complaints About Window Lock Failures?
D&D provides the most reliable and stable casement locks engineered to meet your customers' standards. Our precision manufacturing eliminates quality inconsistencies that lead to complaints, ensuring every sash lock delivers dependable security performance. Contact us to discuss how our proven quality control processes can protect your brand reputation.
As a professional Taiwan-based manufacturer, we offer comprehensive OEM/ODM custom manufacturing services for casement locks tailored to your specific requirements. Share your technical drawings, material specifications, quantity needs, and finish preferences, and our engineering team will evaluate your project to provide competitive pricing that meets your expectations. From mold development to mass production, we deliver full-process solutions with consistent quality control and responsive global service. Whether you need standard sash window locks or custom-designed security hardware, D&D becomes your most reliable partner in building lasting brand value through superior window hardware solutions.













