21d Tempered Glass

Alibaba.com

Overview

Product sourcing insights & recommendations

celltophone.com
www.the7electronics.com
29 来源

1. Product Insights: What is "21D" Tempered Glass?

The phrase "21D" in tempered glass refers to a high-tier marketing specification for screen protectors, primarily emphasizing extreme edge curvature and full-glue adhesion TheandroidportalThe7Electronics. While not a scientific measurement, it represents a significant evolution in the screen protector market:

* Edge-to-Edge Protection: 21D glass is engineered with deeper edge curvature to wrap around the "infinity" or curved screens of modern smartphones, effectively preventing edge lifting and chipping TheandroidportalCelltophone.

* Full Glue Technology: Unlike entry-level protectors that only have adhesive on the black borders, 21D models typically feature "Full Glue" (static adhesive) across the entire surface. This ensures maximum touch sensitivity and bubble-free installation Made-In-ChinaCelltophone.

* Durability & Clarity: Most 21D variants boast 9H or 10H hardness for scratch resistance and an oleophobic coating to repel fingerprints and oils CelltophoneWalmart.

2. Market Trends for 2026

The global tempered glass market is projected to reach approximately $6.59 billion in 2026, growing at a CAGR of 11.64% 360Iresearch. Key trends specifically impacting the "21D" segment include:

* "D" Rating Inflation: Manufacturers are moving toward higher numbers (from 9D to 21D, and even 100D) as a marketing strategy to signal superior "next-generation" edge protection FirsthelptechThe7Electronics.

* Gaming-Specific Variants: There is rising demand for 21D Matte/Ceramic protectors that offer high response rates (up to 120Hz) and reduced glare, specifically targeting mobile gamers SiyasaiQuora.

* Smart Infrastructure Growth: While 21D is a consumer electronics focus, the broader tempered glass market is being driven by safety glass regulations in 71% of new commercial buildings Fortunebusinessinsights.

3. Comparative Analysis: 9D vs. 11D vs. 21D

As the number increases, the focus shifts from basic flat protection to seamless integration with curved hardware:

Feature9D Glass11D Glass21D Glass
Ideal ScreenFlat or slightly curvedModerately curvedHighly curved/flagship screens
Edge FitMay leave gaps on curvesImproved wrapSeamless edge-to-edge seal Theandroidportal
AdhesionMixed (Edge/Full Glue)Mostly Full GluePremium Full Glue Theandroidportal

I have identified 12 wholesale product options matching 21D specifications, with prices ranging from $0.11 to $0.55 per piece, depending on order volume and specific device compatibility.

Based on these trends, here are your next steps:

21d Tempered Glass Screen Protector Full Glue Wholesale

Products · Top picks & verified manufacturers

Factory Price Silk Full Glue Tempered Glass Screen Protector for iPhone 14 Pro

Factory Price Silk Full Glue Tempered Glass Screen Protector for iPhone 14 Pro

$0.154.6(561)
MOQ: 50 pieces
Guangzhou Bingo Electronics Technology Co., Ltd.Guangzhou Bingo Electronics Technology Co., Ltd.verified🇨🇳CN11 yrs
21D 2.5D Full Glue Tempered Glass Screen Protector for Oneplus 7 Pro

21D 2.5D Full Glue Tempered Glass Screen Protector for Oneplus 7 Pro

$0.15-0.184.9(961)
MOQ: 200 pieces
Guangzhou Sumashi Trading Company Ltd.Guangzhou Sumashi Trading Company Ltd.verified🇨🇳CN6 yrs
Hot Selling 9H HD 21D Tempered Glass Screen Protector for iPhone 6 8 Plus 13 Mini Pro Max Full Glue Mobile Screen Protectors

Hot Selling 9H HD 21D Tempered Glass Screen Protector for iPhone 6 8 Plus 13 Mini Pro Max Full Glue Mobile Screen Protectors

$0.224.6(824)
MOQ: 25 pieces
Guangzhou Lkg Electronic Technology Co., Ltd.Guangzhou Lkg Electronic Technology Co., Ltd.verified🇨🇳CN6 yrs
For A10S/A20S/A50/A80 21D Full Screen Tempered Glass Screen Protector Grade AAA 9H Hardness Ultra-Thin Factory Direct Sales

For A10S/A20S/A50/A80 21D Full Screen Tempered Glass Screen Protector Grade AAA 9H Hardness Ultra-Thin Factory Direct Sales

$0.12-0.204.8(959)
MOQ: 50 pieces
Blue-Chip Technology (Shenzhen) Co., Ltd.Blue-Chip Technology (Shenzhen) Co., Ltd.verified🇨🇳CN17 yrs
Hot Sale Cheap 2.5D 9D 21D Full Cover Full Glue Scratch Resistant Anti-explosion Screen Protector Tempered Glass for HOT8

Hot Sale Cheap 2.5D 9D 21D Full Cover Full Glue Scratch Resistant Anti-explosion Screen Protector Tempered Glass for HOT8

$0.09-0.105.0(142)
MOQ: 200 pieces
Guangzhou Lipinyou Electronic Technology Co., Ltd.Guangzhou Lipinyou Electronic Technology Co., Ltd.verified🇨🇳CN1 yr
Explosion-Proof New 21d Mobile Phone Tempered Glass Screen Protector for Tecno Itel Infinix

Explosion-Proof New 21d Mobile Phone Tempered Glass Screen Protector for Tecno Itel Infinix

$0.11-0.134.3(613)
MOQ: 1000 pieces
Guangzhou Bingo Electronics Technology Co., Ltd.Guangzhou Bingo Electronics Technology Co., Ltd.verified🇨🇳CN7 yrs
Tempered Glass Screen Protector 21D Full Glue Grade AAA 9H Hardness Ultra-Thin Anti-Scratch for & More Mobile Phones

Tempered Glass Screen Protector 21D Full Glue Grade AAA 9H Hardness Ultra-Thin Anti-Scratch for & More Mobile Phones

$0.854.8(841)
MOQ: 50 pieces
100+ store reviews8% reorder rate≤2h response time
Dongguan Huahuo Electronic Technology Co., Ltd.Dongguan Huahuo Electronic Technology Co., Ltd.verified🇨🇳CN3 yrs
Micas 21d Protector De Pantalla 21d Tempered Glass Screen Protector Vidrios 21d Para Todo Tipo De Celulares

Micas 21d Protector De Pantalla 21d Tempered Glass Screen Protector Vidrios 21d Para Todo Tipo De Celulares

$0.10-0.224.9(212)
MOQ: 200 pieces
1300+ store reviews≤4h response time
Guangzhou Aiteli Electronic Co., Ltd.Guangzhou Aiteli Electronic Co., Ltd.🇨🇳CN8 yrs
Wholesale 21D HD Clear Mobile Phone Screen Protector Full Glue Tempered Glass Film for iPhone 15 12 13 11 Pro Maxis Grade AAA

Wholesale 21D HD Clear Mobile Phone Screen Protector Full Glue Tempered Glass Film for iPhone 15 12 13 11 Pro Maxis Grade AAA

$0.674.8(520)
MOQ: 50 pieces
Shenzhen New Star Glass & Packing Manufacture Co., Ltd.Shenzhen New Star Glass & Packing Manufacture Co., Ltd.verified🇨🇳CN13 yrs
21D Tempered Glass Screen Protector for iPhone X/XR/11/12/13 Protective Film Phone Glass for Samsung A10 A20 A30 M30 M50 S24 S25

21D Tempered Glass Screen Protector for iPhone X/XR/11/12/13 Protective Film Phone Glass for Samsung A10 A20 A30 M30 M50 S24 S25

$0.16-0.254.7(610)
MOQ: 50 pieces
Guangzhou Doolike Electronic Technology Co., Ltd.Guangzhou Doolike Electronic Technology Co., Ltd.verified🇨🇳CN9 yrs
HD Clear 9H 2.5D 9D 21D Anti-scratch Full Coverage CellPhone Tempered Glass Screen Protector Film Guard for Honor X60

HD Clear 9H 2.5D 9D 21D Anti-scratch Full Coverage CellPhone Tempered Glass Screen Protector Film Guard for Honor X60

$0.35-0.554.6(162)
MOQ: 50 pieces
Shenzhen Kairui Opto-Elec Co., Ltd.Shenzhen Kairui Opto-Elec Co., Ltd.verified🇨🇳CN11 yrs
HD Clear 9H 2.5D 9D 21D Anti-scratch Full Coverage CellPhone Tempered Glass Screen Protector Film Guard for Honor X60

HD Clear 9H 2.5D 9D 21D Anti-scratch Full Coverage CellPhone Tempered Glass Screen Protector Film Guard for Honor X60

$0.35-0.554.7(162)
MOQ: 50 pieces
Shenzhen Kairui Opto-Elec Co., Ltd.Shenzhen Kairui Opto-Elec Co., Ltd.verified🇨🇳CN12 yrs

Sources & References

29 sources cited · Verified industry data & reports

21D Tempered Glass | Best Screen Protector For Mobile In Bulk

celltophone.com

SKU: c2p-21D Category: Temper Glass Tags: 21d glass protector, 21d matte film ceramic, 21d matte tempered glass, 21d tempered glass realme 8 ... Best 21D Tempered Glass: 100% Brand New and High-Quality. Sensitive Touch: Not hinder the intimate contact between the mobile and the hand. Genuine Tempered Glass: The 9H+ hardness can effectively protect your screen from scratches and external shocks. Are you looking for the best tempered glass for mobile at wholesale price? Then you are in the right place. You can buy wholesale tempered glasses in bulk from Cell to Phone online at the lowest price ever.

What is 21D tempered glass film for mobile phone? – The7 Electronics

www.the7electronics.com

We’ve talked about 2.5D and 3D mobile phone tempered glass film in the past. 2.5D or 3D corresponds to the curvature of the curved surface or the edge of the tempered glass film. However, later, new terms such as 4D, 5D, 8D, 9D, 10D, 12D and so on have been invented in the industry, and now 21D tempered glass film has emerged. Let’s go straight, 21D doesn’t make sense. We have introduced 2D, 2.5D and 3D tempered glass film, in fact, unless 2D, 2.5D and 3D tempered film, the rest of the so-called “4D” and “5D” don’t make any sense, the same as “21D”, it is just a gimmick from some manufacturers. Tempered glass film products for mobile phone have risen with the birth of smart phones. After so many years of development, the competition in the mobile phone tempered film industry has been fierce, the supply side is saturated, the demand has not grown much, the products are mature, and there is a lack of innovation, so some manufacturers “innovate” by their names, such as the 21D tempered glass film mentioned in this article, and even the words 11H in the picture (usually it is 9H, but still it doesn’t make too much sense), are all gimmicks, and you can simply ignore them. So, what aspects should be paid attention to when purchasing mobile phone tempered glass film? We have listed some points related to the characteristics of mobile phone tempered film as follows. The following are the points that need to be paid attention to when purchasing tempered film:

21d Full Glue Screen Protector Tempered Glass - Mobile Accessories ...

1d09e696838421d0.en.made-in-china.com

Model NO.: many model about 370 Usage: Mobile Phone Compatible Brand: Samsung to Fit Screen Size: 5.6-6.9'' Function: Ar Anti Glare / Radiation, Anti-View Protetor, Def Protective Film Viscosity: Medium Viscosity Complementing the case, the tempered glass protector shields your phone's display from impacts and scratches, maintaining crystal-clear clarity and touch sensitivity. Its smooth, fingerprint-resistant surface enhances the viewing experience while safeguarding the screen from damage. Tempered Glass Protector FAQs:Q1:What is a tempered glass protector and why is it used? A1:The protective film customized for the size of mobile phone with glass material is called mobile phone screen glass film.Used to protect the mobile phone screen. Q2:How do I apply a tempered glass protector to my phone? If you have specific questions about phone cases or tempered glass protectors, feel free to ask! Address: No.13 Courtyard, Xiangfu Road, Huang Qi, Dali Town, Nanhai District, Foshan, Guangdong, China ... Business Range: Computer Products, Consumer Electronics, Electrical & Electronics, Industrial Equipment & Components, Instruments & Meters, Packaging & Printing, Service, Toys ... Main Products: Mobile Phone Case, Mobile Phone Screen Protector, LCD, Watch Band, Mobile Phone Cover, Tempered Glass, Magsafe Case, Silicon Case, Mobile Phone Accessories, OEM Screen Protector

Wholesale 21d Screen Protector Anti-Fingerprint Design

www.alibaba.com

TPU screen protectors, however, tend to be thicker than pet ones and can slightly alter the appearance of the phone's screen. Tempered glass: The 21D tempered glass screen protector is made of strong, scratch-resistant glass that has undergone heating and cooling to increase its strength. This kind of screen protector provides excellent touch sensitivity and responds well to taps and swipes. The likelihood of cracking is higher than that of other materials, and tempered glass may be more expensive. There are several functions and features of the 21D screen protector that have made it popular. Apart from the full coverage function that was discussed above, 21D screen protectors also come in different materials. The materials include glass (tempered), liquid, or plastic (thermoplastic polyurethane) protectors. Many manufacturers make their screen protectors using plastic or tempered glass. However, the most common and popular material is tempered glass because it is highly durable and offers the best protection for the device's screen. ... The screen protector ensures that there is no change in the sensitivity of the device's screen. The sensory accuracy feature allows for smooth operation and accurate touch response. This is important because there are screen protectors that interfere or change the sensitivity of the device's screen. 21D screen protectors are not part of that category.

21D Matte Film Ceramic Screen protector | Edge to Edge Unbreakable ...

siyasai.com

Matte Tempered Glass is upgraded technology of tempered with 9H hardness and upgraded pressure technology. Screen edges are fully covered in reinforcement to make sure your screen has a stronger and all-rounder protector. Ultimate Curved Edge Full Glue , Clarity and High Response Touch Preserve, Fast exhaust, 9H hardness for maximum protection, Ultra thin And unbreakable with strong hardness, This tempered glass screen protector is chemical processed real glass, it features high transparency, Anti-Scratch, high sensitivity and delicate touch felling. The premium tempered glass has an oleophobic coating that prevents contaminants. Matti Black curved edges provides full coverage over the screen. Secure shatterproof function, will not be broken into small pieces of sharp. Anti Finger Print, Scratch Resistant, Bubble Proof, Matte Finish · Support upto 120HZ Touch response for Gaming. 9H Hardness Tempered Glass Provides perfect protection. SKU: N/A Categories: Accessories, BRANDS, matte temper, MATTE TEMPERD GLASS, SAMSUNG, TEMPERED GLASS Tag: sale

21D Full Tempered Glass Screen Protector Film For IPhone 12/12 ...

www.walmart.com

21D Full Tempered Glass Screen Protector Film For IPhone 12/12 Pro/12 Mini/12 Pro Max(2PCS)21D Full Tempered Glass Screen Protector Film For IPhone 12 12 Pro 12 Mini 12 Pro Max 2PCS21D Full Tempered Glass Screen Protector Film For IPhone 12 12 Pro 12 Mini 12 Pro Max 2PCS Hero image 0 of 21D Full Tempered Glass Screen Protector Film For IPhone 12/12 Pro/12 Mini/12 Pro Max(2PCS), 0 of 8 The 10H hardness can effectively protect the screen from scratches and external shocks, premium tempered glass film is made of specially processed glass which is very effective for protecting the screen from damage. This screen protector is adhered to phones with a silicon adhesive to keep it in place. Glass screen protector is not only scratch resistant, but also shatter resistant - the film reduces the break resistance of your screen by 35 percent. Additionally, the screen protector is covered in an oleophobic coating to prevent fingerprints and other smudges. Protect your cell phone with this premium Tempered Glass flim screen protector.