Why Choose MUJOY
Two decades of RONGO craftsmanship, one dedicated export platform. Premium whole-home doors & windows, engineered for quiet living — delivered to your market, built around your needs.
Group Heritage
MUJOY is the foreign-trade company of RONGO Doors & Windows — a National High-Tech Enterprise and China Top 100 Door & Window Brand with over 20 years of craftsmanship.
Trusted Legacy
Ultra Sound-Insulation
Inherit RONGO’s signature “ultra sound-insulation” technology — a market-proven system that turns noisy streets into quiet, comfortable living spaces.
Quiet Living
Manufacturing Strength
Backed by RONGO’s 150,000+ sqm modern production base with automated lines and strict quality control — stable capacity for large, recurring and project orders.
150,000+ sqm
One-Stop Sourcing
System windows, entry doors, aluminum art and full-house solutions — everything you need from a single supplier, with one accountable partner.
Whole-Home Range
OEM / ODM Flexibility
Custom profiles, finishes, hardware and packaging to match your market, brand and budget — supported by nearly 100 group patents and an in-house R&D team.
Made for You
Certified Quality
ISO 9001 / ISO 14001 certified, green building materials certified, products insured by Ping An Insurance — backed by a 20-year quality warranty.
20-Year Warranty
Quality Accountability
Unified quality standards with a single entity taking full responsibility — raw material through pre-shipment QC, cutting cross-border after-sales risk.
One Responsible Partner
End-to-End Export Service
A full closed-loop foreign-trade team fluent in cross-border processes — from quote, sampling, production follow-up to logistics and remote technical support.
Full Closed Loop
Proven Overseas Field Experience
We understand the real pain points of global buyers. Our business covers 68 countries and serves 100,000+ clients worldwide, with a large portfolio of overseas villa, apartment and commercial project deliveries.
68 Countries · 100k+ Clients