English
About Jumbo Glass Group— 25+ Years Architectural, Shower & Acoustic Glass
A Guangdong-based glass manufacturing group built on three specialised names: Gevergel Engineering Glass for architectural coated and Low-E glass, Jumbo Glass Group for oversized tempered, laminated and insulating glass, and Shunzhifa Glass for precision shower enclosure and acoustic pod glass.
Est. 2000
25+ Years
EN / ASTM Compliant
Jumbo up to 3300 × 20000 mm
Maximum processing size for tempered glass: 3300 × 20,000 mm
Maximum processing size for laminated glass: 3300 × 20,000 mm
Maximum processing size for insulating glass: 3300 × 13,000 mm
Maximum processing size for Low-E glass: 3300 × 12,000 mm
1. Group at a Glance
Jumbo Glass Group is the unified export brand of a glass manufacturing group founded in 2000 as Gevergel Engineering Glass Co., Ltd. Over two and a half decades we have grown from a focused producer of heat-reflective and Low-E glass into a multi-product group serving architects, façade consultants, contractors, distributors and end-users across architectural, bathroom and interior acoustic applications.
Today the group operates through two complementary production identities:
Architectural · Parent Brand
Jumbo Glass Group
Oversized tempered, laminated, Low-E IGU, curved, printed and safety glazing for façades, curtain walls, skylights, balustrades and atria.
Our Origin · 2000
Gevergel Engineering Glass
The group's founding name and technical root — heat-reflective (solar control) glass and offline Low-E coating expertise that still underpins every coated make-up we ship.
Speciality Division
Shunzhifa Glass Co., Ltd.
Specializing in the production of glass for shower enclosures, soundproof pods (quiet rooms/meeting pods), partitions, railings, and skylights—encompassing precision processing, edge grinding, coating, and assembly.
Group Structure: Jumbo Glass Group serves as the unified brand for the international market; Jumbo Glass focuses on producing extra-large architectural curtain wall and window/door glass; Gevergel Engineering Glass represents the Group's founding business and specializes in reflective and Low-E glass; and Shunzhifa Glass is the specialized division dedicated to glass for shower enclosures, soundproof pods, partitions, railings, and skylights.
2. From Heat-Reflective Glass to a Multi-Segment Group
2000 —
Gevergel Engineering Glass Co., Ltd. founded
Established in Foshan as a specialised producer of heat-reflective (solar-control) glass and Low-E glass, supplying coated glass for commercial and residential façades across southern China.
2000s–2010s —
Deepening coating & processing capability
Expanded into tempered, laminated and insulating glass processing. Gevergel's coating know-how became the technical foundation for the group's architectural product range.
2010s —
Jumbo-format & export focus
Investment in jumbo downstream lines enabled oversized monolithic, laminated and IGU production. Export markets in Europe, North America, the Middle East and Southeast Asia became a core business under the Jumbo Glass Group name.
Later expansion —
Shunzhifa Glass Co., Ltd.
Addition of Shunzhifa Glass to develop two specialist product lines: shower enclosure (bathroom partition) glass and acoustic pod / quiet-room glass — bringing precision edgework, decorative coating and acoustic interlayer capability into the group.
Today —
One group, three focused names
Architectural glazing (Jumbo Glass) + shower & acoustic specialities (Shunzhifa showerspace and AcouSpace) share manufacturing base, quality system and export organisation — giving customers a single point of accountability across segments.
3. Three Product Pillars
A. Architectural Glass — Jumbo Glass brand
Jumbo monolithic & laminated glass: up to 3300 × 20000 mm
Jumbo IGU: up to 13000 × 3000 mm
Low-E insulating glass: U-value 1.2–1.8 W/m²K (argon-filled Low-E IGU); vacuum glass ≈ 0.7 W/m²K, small format only
Tempered, heat-strengthened & HST heat-soaked glass
Laminated (PVB 0.38–2.28 mm / SGP) for balustrades, overhead & post-breakage retention
Low-iron, ceramic frit, silk-screen & digitally printed glass
B. Shower Enclosure Glass — Shunzhifa showerspace brand
Tempered shower door & bathroom partition glass, cut to size
Precision edgework, hinge holes, notches & cut-outs
Acid-etched, frosted, printed & decorative coating options
Laminated safety options for frameless systems
Custom sizes, thicknesses and hardware-compatible fabrication for distributors and OEMs
C. Acoustic Pod Glass — Shunzhifa AcouSpace brand
Glass for office phone booths, meeting pods & quiet rooms
Acoustic laminated make-ups (PVB / specialised acoustic interlayer) for sound attenuation
Monolithic, laminated & IGU options depending on target Rw rating
Coordination of glass, edge conditions and aperture sizes with pod manufacturers
Balanced light, openness and speech-privacy performance
One quality system. Whether the end use is a 200-metre façade, a frameless shower door or a meeting pod, fabrication follows the same process controls — documented make-up, batch traceability and inspection records.
4. Production Equipment & Capability
Our lines are configured for jumbo-format downstream processing, not merely a tempering furnace. This is what allows the group to hold flatness, tolerance and optical quality on oversized panels.
Cutting & optimisation
CNC cutting line for jumbo float, Low-iron and coated stock
Edge deletion for Low-E coatings
Nesting optimisation to maximise yield on large sheets
Tempering & heat treatment
Horizontal tempering furnace for jumbo formats
Surface stress ≥95 MPa for relevant thin tempered glass
Roller-wave and optical-distortion control for façade grade
Optional HST @ 554°F × 4 h, NiS breakage controlled to <0.08%
Lamination
PVB 0.38–2.28 mm and SGP structural interlayer
Clean lay-up for optical clarity (balustrade, overhead, acoustic use)
Residual-strength and post-breakage-retention make-ups
Insulating glass
Warm-edge spacer, air / argon / krypton cavities
Dual-seal system for long-term dew-point stability
Coating surface position (#2 / #3) engineered per project
Coating, printing & finishing
Offline Low-E via major coating partners (Gevergel's original speciality)
Ceramic frit / silk-screen / digital printing for shading & branding
Drilling, notching, hinge holes & precision edgework for Shunzhifa shower and pod glass
In-house quality lab
Fragmentation test (EN 12150), surface-stress measurement
Flatness, haze & VLT checks
U-value / SHGC calculation support (EN 673 / ISO 10292)
Batch-ID traceability across every order
5. Quality Control System
We maintain a rigorous quality control system to ensure the delivery of high-quality glass products to our customers.
✅ Dimensional inspections are conducted at every stage of production, including cutting, edge grinding, and tempering.
✅ High-intensity lighting is used to inspect glass surfaces, ensuring they are free from defects.
✅ Rigorous stress testing is performed on tempered glass to guarantee its strength and safety.
✅ Warp and deformation checks ensure a high level of surface flatness.
✅ High-impact testing ensures that tempered, laminated, and insulating glass products are safe for use in architectural applications.
Product standards
EN 12150-1 / EN 12150-2 — Toughened soda-lime silicate glass
EN 14449 — Laminated glass
EN 1279-1…4 — Insulating glass units
ISO 12543 — Laminated glass & interlayer
ASTM C1048 — Heat-treated glass ·
ASTM C1172 — Laminated glass
IGCC / SGCC — North American certification
CE / UKCA Declaration of Performance (for applicable product groups)
ASTM E1300 — Glass thickness & load calculation
6. How a Procurement Manager Should Read This Page
Can you hold tolerances on oversize panels? CNC cutting, furnace control, flatness & roller-wave checks
Will tempered glass self-explode? HST @ 554°F × 4 h; NiS breakage controlled to <0.08%
Is the Low-E performance real? Low-E IGU U-value 1.2–1.8 W/m²K; vacuum glass ~0.7, small format only
Can it go in façade / roof / balcony? EN 12150, EN 14449, EN 1279, ASTM C1048 / C1172 / E1300
Do you make shower & pod glass too? Yes — Shunzhifa division: precision edgework, holes, acoustic laminates
Can you ship to EU / US / GCC? FOB / CIF / CFR / DAP; A-frame crating, humidity-controlled sea freight
7. Project Evidence, Not Stock Photos
Reference experience spans high-rise unitized curtain walls, rotated tower façades, large-span atria, sloped overhead glazing, P8A balustrades, shower enclosures and office acoustic pods.
Example: Qianhai Chuangjin Tower, Shenzhen — 149.7 m / 32 floors, unitized façade with panels up to 1800 × 4300 mm, make-ups such as (10+1.90PVB+10)+12A+15 and (8+1.52PVB+8)+12A+12.
8. Why Buyers Choose a Manufacturer Over a "Cheaper" Supplier
We do not claim U = 0.7 W/m²K for ordinary Low-E IGU. Low-E IGU is 1.2–1.8; vacuum glass is the exception.
We do not sell HST as "never breaks". We sell controlled NiS risk.
We do not treat jumbo glass as "big glass". We treat it as thermal stress, flatness, crate dynamics and crane access.
One group covers architecture + shower + acoustic — fewer interfaces for multi-product projects.
9. Factory & Global Delivery
Plant: Foshan, Guangdong, China
Brands: Jumbo Glass Group · Gevergel Engineering Glass · Shunzhifa Glass
Markets: Europe, North America, Middle East, Southeast Asia, Australia
Incoterms: EXW, FOB Shenzhen/Guangzhou, CIF, CFR, DAP (confirmed per order)
Lead time: typically 3–4weeks from approved shop drawing, plus ocean freight
Docs: EN/ASTM or ISO-format calculations, batch IDs, HST records
10. Start a Project Inquiry
Tell us the five things that actually matter — whether it is a façade, a shower enclosure or an acoustic pod:
Application: façade / skylight / balustrade / shower / acoustic pod / partition
Make-up: thickness, coating, cavity, gas fill, interlayer
Size & quantity: max panel size, total m², phasing
Standard: EN / ASTM / local code / client specification
Site: delivery port, crane access, unloading condition
Are Jumbo Glass Group, Gevergel and Shunzhifa the same company?
They operate as one group. Jumbo Glass Group is the unified export brand; Gevergel Engineering Glass is the group's founding architectural-glass identity (established 2000); Shunzhifa Glass is the specialist shower-enclosure and acoustic-pod division.
Why does the group have three names?
Each name represents a depth of expertise. Gevergel carries the original 2000 coating and Low-E heritage; Jumbo represents oversized architectural glazing; Shunzhifa focuses on the precision fabrication shower and acoustic glass require. Together they give customers one accountable supplier across three segments.
Can you supply both façade glass and shower / pod glass?
Yes. Architectural glazing is produced under the Jumbo / Gevergel identity, while shower enclosure and acoustic-pod glass are produced by the Shunzhifa division — sharing one manufacturing base and one quality system.
Which standards do your glass products comply with?
EN 12150, EN 14449, EN 1279, ISO 12543, ASTM C1048, ASTM C1172 and ASTM E1300, among others. Certificates confirm conformity at the time of issue; the engineer of record still approves each project.
What documents can you provide for a tender package?
ISO 9001, product certificates, test reports, HST records, U-value / SHGC calculations, factory-audit documents, batch IDs and project references — see Resources > Certificates and Resources > Test Reports.
Low-E, IGU, tempered vs laminated, curtain wall, overhead and procurement.Browse guides →
Case studies from high-rise façades to acoustic interiors.See projects →
Jumbo Glass Group · Foshan, Guangdong, China · Est. 2000 (Gevergel Engineering Glass Co., Ltd.) · Shunzhifa Glass Co., Ltd.
U-value 1.2–1.8 W/m²K for argon-filled Low-E IGU; vacuum glass ≈ 0.7 W/m²K, small format only. Values are manufacturer's stated capability; final performance must be confirmed by approved shop drawings, energy model, design institute / engineer of record and local authority requirements.
AS/NZS 2208
AS/NZS 2208
EN 1063:2000
EN 1063:2000
EN 1063:2000
EN 12150-2:2004
Subscribe To Our Newsletter To Get Our Update News!
Copy Right © 2026 Jumbo Glass Group
