Aluminum Windows & Doors
Thermally broken systems for residential and commercial openings.
About ROTIN
Precision manufacturing.
Practical partnership.
We design and manufacture custom aluminum and steel window, door and architectural metal systems for residential and commercial projects worldwide.
Discuss your project ↗ Company introduction
Built in Jiangsu.
Ready for the world.
ROTIN was established in 2012 in Changzhou, Jiangsu—at the heart of the Yangtze River Delta.
We focus on the design and manufacture of high-quality aluminum alloy, precision cold-rolled steel tube and special steel-profile windows and doors, curtain wall systems and architectural metal components.
Our production is supported by an integrated supply chain, connected intelligent equipment and an ERP management system. In 2023, ROTIN established a design and product technical support center in Shanghai to provide product display, design consulting, supply-chain coordination and technical support.
Inside ROTIN
Real facilities.
Real production.
A look inside our Changzhou manufacturing base—from profile storage and CNC equipment to window and door assembly.
What we manufacture
Systems for the complete building envelope.
Custom-configured around architectural intent, performance requirements and project delivery needs.
Steel-Frame Systems
Precision cold-rolled and special steel profiles with slim architectural sightlines.
Curtain Wall Systems
Coordinated façade solutions for light-commercial and architectural applications.
Metal Building Components
Project-specific fabricated components designed to integrate with the building.
Intelligent manufacturing
Controlled at every critical step.
Connected production equipment helps translate approved drawings into repeatable fabrication quality, accurate hardware preparation and reliable assembly.
Talk to our technical team ↗Thermal-break assembly
Knurling and rolling equipment improves the mechanical bond between profiles and insulation strips.
Automated profile cutting
Work-order scanning, automatic measurement and smooth, accurate cutting.
Four-axis CNC machining
Program-controlled tool changes support precise holes and hardware preparation.
Precision end milling
High-accuracy milling helps improve mullion connections, strength and water resistance.
Partner support
From first drawing to final delivery.
ROTIN supports project teams with practical coordination before, during and after production.
Design consultation
System selection and opening configuration based on project requirements.
Technical development
Quotations, schedules and shop drawing coordination before production.
Manufacturing & QC
Managed production, assembly and pre-shipment inspection.
Export delivery support
Protective packaging, loading coordination, documentation and technical follow-up.
YOUR DRAWINGS. OUR MANUFACTURING.
Start a conversation ↗