Frequently Asked Questions

The MOQ is 1,000 pieces. Ten samples can be provided during the prototype stage.

Yes. Ten samples can be provided during the prototype stage.

For Gorilla Glass 3, Gorilla Glass 4, and Gorilla Glass 2320, more than 90% of samples are delivered within 7 days. Mass production takes approximately 15 days.

Payment is 100% T/T in advance. Payment methods include bank transfer and PayPal.

After the required processing is completed, the glass goes through final inspection, followed by protective-film application and packaging.

GelivableGlass is certified to ISO 9001:2015 and ISO 13485:2016. These certifications support our quality management, process control, traceability, and consistent manufacturing of custom glass products for commercial and industrial applications.

Yes. GelivableGlass received the EcoVadis Bronze Medal in January 2026, with an overall sustainability score of 67/100 and a ranking in the Top 35% globally.The EcoVadis assessment covers key sustainability areas including Environmental Responsibility, Labor & Human Rights, Business Ethics & Integrity, and Sustainable Procurement.

Glass is immersed in a molten potassium nitrate (KNO₃) salt bath. Larger K⁺ ions replace smaller Na⁺ ions near the glass surface, increasing surface density and creating compressive stress, thereby improving strength.

Thermal strengthening generally requires glass at least 2.0 mm thick. At 2.0 mm, only heat strengthening is available, while full tempering normally requires 3.0 mm or more. Thermally tempered glass breaks into relatively blunt fragments, while chemically strengthened glass can still break into sharp pieces. Thermal strength is evaluated using impact fragmentation and ball-drop tests, while chemical strengthening can also be quantified using CS and DOL stress data.

For Corning high-alumina glass, the standard is DOL > 40 μm and CS > 650 MPa. For float glass, the standard is DOL > 8 μm and CS > 450 MPa.

Chemical strengthening cannot be reliably identified by visual inspection. A stress meter can be used for testing: visible stress lines indicate strengthened glass, while no stress lines indicate no chemical strengthening.

IK08 corresponds to 5 J of impact energy. Using E = mgh, this is approximately equivalent to a 0.512 kg steel ball dropped from 1 m, or a 1 kg steel ball dropped from approximately 0.52 m.

Yes. Ball-drop performance depends on both glass thickness and glass size.

After impact testing according to the specified procedure, a 50 × 50 mm area of the broken glass is checked. The number of fragments in that area should exceed 50.

Thermally tempered glass cannot be cut after strengthening because the entire piece will break. Chemically strengthened glass can technically be cut, but it is not recommended.

Ink adhesion is tested by cross-cut according to ASTM D3359 using 3M 600 tape. Typical criteria are: 5B—no peeling; 4B—less than 5% peeling for black, white, or gray; and 3B—5–15% peeling for overlapping multicolor inks. Special metallic, mirror silver, IR semi-transparent, and similar inks may be tested directly with 3M 600 tape without cross-cutting, with no peeling allowed.

Key checks include dimensional accuracy, edge polish quality, unequal grinding at the two ends, sufficient cooling water to prevent burned edges, machine leveling, motor bearing movement, and worn clamping plates that can cause interrupted or uneven polishing.

Possible causes include water hardness above about 20 ppm, residual surfactant from the cleaning solution, or airborne dust and contamination. Keep the environment clean, rinse thoroughly with purified water, blow off water droplets with strong air, and dry the glass vertically.

Poor settling performance of the cutting fluid may allow glass powder to remain in the process and cause scratches. Using a cutting fluid with better particle-settling performance can help reduce this problem.

GelivableGlass maintains strict quality control throughout the manufacturing process. Full inspections are performed after key production processes, supported by IPQC (In-Process Quality Control) and final spot checks before shipment. GelivableGlass is certified to ISO 9001:2015 and ISO 13485:2016, helping ensure consistent quality, traceability, and process control for custom glass products.

Yes. GelivableGlass is ISO 13485:2016 certified. This quality management standard supports controlled manufacturing processes, traceability, documentation, and quality assurance for projects requiring a high level of process control.

Yes. GelivableGlass is certified to ISO 9001:2015, supporting standardized quality management, process control, inspection, continuous improvement, and consistent manufacturing quality.

Our ISO 9001:2015 and ISO 13485:2016 quality management systems support controlled production processes, inspection, traceability, documentation, corrective actions, and continuous improvement throughout custom glass manufacturing.

AG glass, or anti-glare glass, is chemically treated to change the original reflective glass surface into a matte, micro-textured surface. The textured surface diffuses reflected light and helps reduce glare.

Ordinary clear glass has a smooth reflective surface. AG glass has a chemically treated micro-textured surface that changes strong mirror-like reflection into diffuse reflection, helping reduce glare.

AG glass is used mainly to reduce visible screen glare and is commonly used for outdoor displays, public information equipment, industrial controls, electronic displays, and multimedia equipment. AR glass is designed to reduce reflection while increasing optical transmission and is commonly used in applications such as camera-related products.

AG glass reduces screen reflections, helps keep displays readable under strong light, and improves visual comfort. Chemically etched AG glass also retains the glass surface itself rather than relying on a separate sprayed coating.

The best gloss level should be evaluated with the actual assembled product. When both haze and clarity are acceptable, lower gloss generally provides stronger anti-glare performance.

Lower gloss means higher haze and lower clarity. Therefore, Gloss 35 AG glass is generally not suitable for display cover glass. Gloss values from 50 to 95 are more commonly used for display applications.

Gloss and haze are inversely related. Lower gloss means higher haze, while higher gloss means lower haze.

Haze is expressed as a percentage. It represents the percentage of transmitted light that deviates by more than 2.5° from the incident light direction relative to total transmitted light.

AG glass can affect apparent clarity if the surface is not properly controlled. The uniformity and fineness of the surface texture are important for reducing glare while maintaining display resolution.

Gelivable AG glass is immersion-etched. For single-sided AG glass, the opposite surface is protected during etching. Unless otherwise specified, the air side is normally etched, although tin-side etching can also be provided when required.

Yes. AG glass can be used with full optical bonding. With double-sided AG glass, the bonded AG surface can be filled by the optical adhesive, effectively changing it to a single-sided AG effect. The gloss may increase by approximately 10–20 after full bonding.

Yes. AG and AR treatments can be applied to the same cover glass, and an AF anti-fingerprint coating can also be added. The combination of AG, AR, and AF on one cover glass is often referred to as “3A.”

Yes. Both single-sided and double-sided AG glass can be screen printed. The printing process is essentially the same as for clear glass and does not adversely affect the AG treatment.

Yes. Local non-AG areas can be produced in two ways: the full surface can be etched first and the required areas polished afterward, or camera windows, logos, and other areas can be masked before AG etching.

Yes. The process sequence is AG etching first, followed by thermal or chemical strengthening. Chemically strengthened float AG glass typically has a DOL of 8–12 μm and CS above 450 MPa.

AG etching is performed before strengthening. The typical sequence is raw-sheet AG etching → cutting → edge grinding → cleaning → chemical or thermal strengthening.

The effect is negligible. The etched depth is only about 0.05 mm, and chemical strengthening is an immersion process. Multiple tests in the source data showed no meaningful reduction in glass strength.

Place the AG glass under a fluorescent lamp and observe the reflected light. If the reflection is diffused, that side is the etched AG surface. If the reflection is clear, it is the non-AG surface.

Common AG glass parameters include gloss, haze, roughness, and transmittance. Gelivable also evaluates resolution to help ensure that glare reduction does not excessively affect display clarity.

AG etching should not fundamentally change the original transmittance of the glass material. For example, if the raw glass has 90% transmittance, properly processed etched glass should remain around 90%.

Spray-coated AG glass has a lower cost, but the surface coating can wear or peel over time. Chemically etched AG glass modifies the glass surface itself, so there is no separate AG coating layer to peel off, and the glass retains the strength of the base material.

Yes. AF coating can be applied to AG glass in the same way as to clear glass. However, if the AG surface is already sufficiently fine, it naturally reduces visible fingerprints, so adding AF may increase cost and the AF layer can wear over time.

Common defects include uneven etched particles, white spots, water marks, contamination, acid-wash marks, and excessive gloss variation.

Scratched AG glass normally cannot be polished in the same way as clear glass without damaging the AG surface. To reduce scratches, adhesive protective film can be applied to both sides before cutting and CNC machining.

The recommended storage environment is 23 ± 2°C and below 50 ± 10% RH. Under these conditions, AG glass can be stored for at least six months.

Corning Gorilla Glass is an aluminosilicate glass material commonly used for applications that require high strength, high surface hardness and good optical performance. Compared with standard soda-lime glass, high-alumina Corning glass is designed to achieve stronger chemical-strengthening performance.

Corning Gorilla Glass 2320 and Panda Glass are aluminosilicate glasses with about 92% transmission at 550 nm and surface hardness ≥9H. Soda-lime glass has about 89% transmission and surface hardness ≥7H. Typical chemical-strengthening standards are CS > 650 MPa and DOL > 40 μm for high-alumina Corning and Panda glass, compared with CS > 450 MPa and DOL ≥ 8 μm for soda-lime glass.

Corning Gorilla Glass 2320 and Panda Glass are aluminosilicate glasses with about 92% transmission at 550 nm and surface hardness ≥9H. Soda-lime glass has about 89% transmission and surface hardness ≥7H. Typical chemical-strengthening standards are CS > 650 MPa and DOL > 40 μm for high-alumina Corning and Panda glass, compared with CS > 450 MPa and DOL ≥ 8 μm for soda-lime glass.

For Corning high-alumina glass, the chemical-strengthening standard is DOL > 40 μm and CS > 650 MPa.

CS refers to compressive stress, while DOL refers to depth of layer. These values are used to evaluate the strength and depth of the ion-exchanged surface layer after chemical strengthening. For Corning high-alumina glass, the stated standard is CS > 650 MPa and DOL > 40 μm.

For custom Gorilla Glass 3 and Gorilla Glass 4, available processes include CNC machining for chamfers, bevels, holes and custom shapes; chemical strengthening; multicolor printing using Pantone numbers; AF anti-fingerprint coating; AR anti-reflective coating; and double-sided 3M tape assembly.

Yes. Gorilla Glass can be CNC machined for custom outer shapes, holes, chamfers and bevels. Thin Corning glass requires careful machining parameters to reduce edge chipping during processing.

Thin 1.0 mm Corning glass is prone to edge chipping. CNC processing is completed in stages: rough-grinding the outer profile, machining holes and outer bevels, and then finishing the hole bevels. Special grinding tools with different grit sizes are used, and curved sections must be processed slowly to reduce chipping.

Thin glass such as 1.0 mm Corning glass is more prone to warpage during chemical strengthening. It should therefore be strengthened separately using dedicated process parameters rather than being processed together with other glass materials.

Yes. For custom Gorilla Glass processing, CNC machining is completed before chemical strengthening so that the finished shape, holes, chamfers and bevels can then receive the required strengthening treatment.

Under the same glass thickness and test conditions, high-alumina Corning glass typically performs about one level higher than float glass in ball-drop testing.

The source data lists Gorilla Glass and Panda Glass at surface hardness ≥9H, while soda-lime glass is listed at ≥7H.

The source data lists Corning Gorilla Glass 2320 at approximately 92% transmission at 550 nm. Panda Glass is also listed at approximately 92%, while soda-lime glass is approximately 89%.

Yes. Custom Gorilla Glass can be combined with AF anti-fingerprint coating, AR anti-reflective coating, multicolor printing using Pantone color references, and double-sided 3M tape assembly.

The source data lists a shape tolerance of ±0.05 mm, a printing tolerance of ±0.1 mm and a minimum hole diameter of φ1.0 mm for custom cover glass processing.

For Gorilla Glass 3, Gorilla Glass 4 and Gorilla Glass 2320, more than 90% of samples are delivered within 7 days. The stated mass-production lead time is approximately 15 days.