Dongcheng's outdoor sunroom range is purpose-built for courtyard, terrace, and garden installations where the structure is fully exposed to the outdoor climate year-round. Frame profiles are heavy-gauge aluminum alloy with dedicated outdoor-grade weatherproof surface coating, capable of resisting sustained UV exposure, driving rain, hail impact, and wind loads without surface degradation or structural fatigue.
A one-piece waterproof sealing system at all panel joints and roof connections reliably prevents water ingress even under prolonged heavy rainfall, and all frame steel inserts and connectors are corrosion-treated to eliminate rust risk in continuously wet conditions. Single and double-layer structural configurations are available to suit different span requirements and functional briefs — from a simple garden room to a fully equipped outdoor entertaining pavilion with integrated lighting, ventilation, and screening.
About Dongcheng
Located in the High-tech Industrial Park of Wuxing District, Huzhou, Zhejiang, China, Zhejiang Dongcheng Energy Saving Technology Co., Ltd. is a professional manufacturer specializing in aluminum energy-efficient doors and windows, fire-rated doors and windows, curtain wall systems, railings, shading systems, and skylights. Integrating R&D, design, production, installation, and after-sales service, we provide complete solutions for a wide range of building applications.
With advanced production equipment, a well-established management system, and an experienced professional team, we are committed to delivering reliable products and consistent quality. Operating in accordance with the ISO9000 quality management system, we implement standardized control throughout the production process to ensure that our products meet relevant standards and project requirements.
Driven by technology and innovation, we continuously improve our products and services to better serve the market. We also place great importance on safety management, maintaining strict supervision throughout project execution to ensure safe, stable, and reliable delivery.
Guided by the principles of integrity, quality, and service, we are committed to providing cost-effective products and dependable support, and we look forward to building long-term partnerships with customers worldwide.
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