• black bathroom door handles

Structure innovation

IISDOO designer


The company has a product development department, including appearance designers, structural engineers and process engineers, all of whom have accumulated many years of experience in the hardware door lock industry;

Every year, 3-4 original designs of zinc alloy handles will be launched; (There are 7-8 original styles every year, and we only select some to launch on the market), and the structural engineers will cooperate with the appearance designers to jointly develop unique products on the market through structural optimization; the process engineers will match the corresponding surface treatment process according to the appearance requirements of the product to fully demonstrate the beauty of the product;

Since 2001, we have developed and assembled internal mechanical devices with multiple configurations and innovative solutions, including 5mm ultra-thin rosette, 63mm rosette, silent mortise lock, magnetic mortise lock, 5572/6072/60mm/90mm mortise lock, etc. Continuous structural innovation is the reason why we have always maintained our advantages among global door hardware companies.

IISDOO 94/98 series door handle
IISDOO 94/98 series door handle
IISDOO 63 series door handle
262F-C Family Portrait
Door lock exquisite packaging

IISDOO's R&D team has done a lot of research on wooden and glass doors in different countries around the world, and has developed more than 10 types of door lock internal structures to meet the needs of different customers.

The most economical door handle
Door lock exquisite packaging
IISDOO Handle Quality Inspection Room



All hardware products are manufactured and processed independently by the IISDOO factory located in Jiangmen City, Guangdong. IISDOO products go through a series of production processes such as die-casting, polishing, electroplating, quality control, packaging, and delivery, and are perfectly delivered to customers.

Same Color Of One Set Door Hardware

Mortise Lock, Cylinder, Door Handle, Rosette

Our technology enables door hardware to present different surface treatments. We have achieved color uniformity between different metals and different hardware parts, which is not an simple matter!

door lock body make in China
Exposure key hole at IISDOO
Hidden key hole

IISDOO Gobal Network


Send a message to get more handle details