Direct factory export options optimized for Western European building energy efficiency, acoustic comfort, and refined satin visual aesthetics.
As the historic university city of Portugal and a rising technology hub along the Mondego River, Coimbra presents a unique architectural landscape. The market demands a delicate equilibrium between heritage restoration (Baixa and Alta districts) and modern thermal, acoustic, and privacy performance in tech districts like iParque (Coimbra Innovation Park) and residential expansions in Solum and Quinta da Portela.
Coimbra’s urban regeneration mandates architectural glazing that harmonizes with historic limestone facades while satisfying modern energy performance codes. Satin translucent acid-etched glass offers high visible light transmission (VLT) without line-of-sight exposure, perfect for modernizing historical stone structure interiors.
Located in Central Portugal, Coimbra experiences hot, dry summers paired with humid winter conditions along the Mondego river valley. Acid-etched glass provides superior resistance to surface oxidation, staining, and moisture degradation compared to traditional mechanical sandblasting.
With the University of Coimbra driving biotech, healthcare, and software incubators, commercial offices require fingerprint-free, non-glare interior partitions, acoustic privacy walls, and ergonomic display glass cover plates that enhance visual comfort under intense LED or daylight conditions.
Unlike basic sandblasted glass—which possesses an open porous structure prone to trapping grease, dirt, and fingerprints—our direct-chemical hydrofluoric acid etching creates a sealed, silky micro-surface topography. This dramatically lowers facility cleaning overheads for Coimbra commercial buildings and high-traffic hotel environments.
Our manufacturing facility employs automated, computer-controlled liquid immersion and spray chemical etching using precise hydrofluoric acid formulation matrices. This controls the surface roughness index ($R_a$) at a microscopic level, producing consistent light scattering while keeping the structural integrity of float base glass intact.
| Performance Parameter | Acid-Etched Satin Glass | Traditional Sandblasted Glass | Coimbra Project Benefit |
|---|---|---|---|
| Surface Roughness ($R_a$) | 0.4 µm – 0.8 µm (Micro-sealed) | 2.5 µm – 5.0 µm (Rough/Open) | Silky smooth texture; zero fingerprint retention. |
| Visible Light Transmittance (VLT) | 83% – 89% (Clear Float Base) | 65% – 75% (Light Diffusion Loss) | Maximizes interior natural daylighting in narrow Coimbra urban street layouts. |
| Acid/Alkali Chemical Resistance | Class A (ISO 695 / DIN 12116) | Low (Porosity traps contaminants) | Withstands humid Mondego river weather & heavy chemical cleaning agents. |
| Tempering & Lamination Compatibility | 100% Fully Temperable & Laminated | Micro-fractures decrease bending strength | Meets EU EN 12150 & EN 14449 safety glass standards for public spaces. |
| Glare Reduction Haze Value | 90% – 95% Controlled Haze | Uneven Light Scattering | Ideal for Anti-Glare (AG) display covers and translucent office dividers. |
Procuring architectural and processed acid-etched glass directly from Hangzhou Greensina Glass Co., Ltd. empowers Coimbra-based real estate developers, facade contractors, and interior distributors to unlock immense competitive edges.
Operating from Hangzhou’s advanced industrial glass manufacturing ecosystem, we leverage direct access to top-tier float glass ribbon lines (Xinyi, Jinjing, CSG). This eliminates intermediary markups and guarantees float glass color clarity (including ultra-clear low-iron float glass with minimum iron content $\le 120\text{ ppm}$).
Shipping heavy glass across continents requires robust packaging technology. We engineer fumigated, heavy-duty wooden end-cap crates reinforced with steel banding, integrated corner protectors, and hydrophobic anti-mold powder/interlayer paper between every sheet.
Browse our complete range of processed architectural glass, anti-glare screens, decorative satin sheets, and custom tempered enclosures.
Hangzhou Greensina Glass Co., Ltd. is a professional manufacturer specializing in architectural and decorative glass solutions. Located in Hangzhou, China, the company focuses on providing high-quality glass products widely used in residential buildings, commercial spaces, offices, and interior design projects. Our main product range includes tempered glass, laminated glass, insulated glass, frosted glass, and tinted glass, all designed to meet modern requirements for safety, energy efficiency, and aesthetic appeal.
Founded in 2010, Greensina Glass has grown steadily from a small processing workshop into a reliable supplier in the architectural glass industry. The company now employs more than 90 experienced staff members, including skilled technicians, engineers, and quality control specialists. Our production facility covers an area of approximately 7,000 square meters and is equipped with advanced glass processing equipment to ensure precise manufacturing and consistent product quality.
Over the years, Hangzhou Greensina Glass Co., Ltd. has expanded its market to serve customers both domestically and internationally. Our products are exported to Europe, North America, Southeast Asia, and the Middle East. By focusing on innovation, strict quality management, and customer-oriented service, the company is committed to delivering dependable glass solutions and establishing long-term partnerships with clients worldwide.
Acid-etched satin glass provides high aesthetic versatility across major construction and design sectors in the Coimbra metropolitan zone:
Boutique accommodations in Alta & Baixa Coimbra utilize 8mm and 10mm acid-etched tempered shower doors and water-closet privacy screens. The non-porous finish resists hard water scale build-up, maintaining pristine visual presentation for guests.
Tech company headquarters and shared workspaces deploy double-side acid-etched glass for executive conference rooms, acoustic wall cladding, and anti-glare display cover glass for digital interface kiosks.
High-end apartment developments integrate laminated frosted balustrades and exterior spandrel glazing to provide balcony privacy without blocking solar daylighting required for EU energy rating certificates.
Key technical and procurement insights for Portuguese glass wholesalers, facade engineering firms, and interior design buyers.
Acid-etched glass undergoes a chemical treatment with hydrofluoric acid that creates a smooth, micro-sealed satin finish. Sandblasted glass uses mechanical force to pit the surface, leaving porous micro-cavities that trap moisture, oil, and dust. In Coimbra's humid winter air near the Mondego, acid-etched glass will not yellow, stain, or fingerprint, keeping maintenance costs minimal.
Yes. All Hangzhou Greensina acid-etched glass products are manufactured using premium float glass stock and can be fully tempered, heat-strengthened, or laminated with PVB/SGP interlayers. They strictly meet European Safety Glass Standards EN 12150 for thermal toughening and EN 12600 for pendulum impact resistance.
Our standard factory production time is 15 to 20 days post-order confirmation and technical drawing approval. Ocean transit from Ningbo/Shanghai to Port of Leixões or Sines takes approximately 28 to 35 days. Overall delivery timeline from factory floor to Coimbra job site ranges between 45 to 55 days.
We utilize custom-engineered fumigated plywood crates with internal moisture-absorbing desiccants and non-adhesive protective films or interleaving anti-friction powder. Crates are tightly strapped with high-tensile steel banding and braced inside 20GP or 40HQ containers using timber blocking and steel wire tie-downs.
Yes, we offer both standard clear float acid-etched glass and extra-clear (Low-Iron) satin etched glass. Low-iron etched glass eliminates the greenish edge tint, delivering a crisp, brilliant translucent white appearance ideal for high-end residential interiors and museum displays.
Greensina Glass