Guangdong bulletproof glass supplier: What are the different categories of 20–40 mm security‑grade bulletproof glass, and which applications are they best suited for?
Release time：
Nov 02,2026
Bulletproof glass can be categorized into several core product lines based on national protection standards, substrate thickness, lamination processes, and protective performance. These categories vary significantly in bullet‑resistance, light transmission, weather resistance, cost, and suitability for specific security applications. Precise classification and selection are essential to ensure compliance with security requirements, regulatory adherence, and optimal cost‑effectiveness. Unfortunately, many security teams lack a clear understanding of these categories, leading to indiscriminate choices that result in inadequate protection levels, budget overruns, and failed project acceptance.
Bulletproof glass can be categorized into several core product lines based on national protection standards, substrate thickness, lamination processes, and protective performance. These categories vary significantly in bullet‑resistance, light transmission, weather resistance, cost, and suitability for specific security applications. Precise classification and selection are essential to ensure compliance with security requirements, regulatory adherence, and optimal cost‑effectiveness. Unfortunately, many security teams lack a clear understanding of these categories, leading to indiscriminate choices that result in inadequate protection levels, budget overruns, and failed project acceptance.
Guangdong Haibo Special Glass Technology Co., Ltd. As the original manufacturer of bulletproof glass in Foshan, we have established a comprehensive product portfolio spanning 20–40 mm thicknesses, covering all application scenarios—including civilian commercial security, financial‑sector security, government‑level security, and high‑sensitivity, classified‑information projects—ensuring seamless integration with a wide range of security‑related projects.
The four core categories of bulletproof glass, along with their key specifications and applicable scenarios: First, 20mm Grade‑1 bulletproof glass—meeting national standards for basic protection, capable of stopping 7.62mm rounds from the Type 64 pistol, with a light transmittance of 78% and excellent cost‑effectiveness; suitable for convenience stores, standard guard booths, small retail outlets, and general indoor window security. Second, 25mm Grade‑2 bulletproof glass—featuring an upgraded composite structure that can withstand 7.62mm steel‑core rounds from the Type 54 pistol, offering enhanced protective stability; ideal for gold shops, jewelry showrooms, government service counters, and small to medium‑sized security facilities. Third, 35mm Grade‑4 bulletproof glass—crafted with a high‑strength, thickened composite process, capable of resisting 56mm rifle rounds, delivering superior impact resistance and a high security rating; well suited for bank teller windows, vaults, police station service counters, and critical high‑security areas. Fourth, 40mm ultra‑thick custom bulletproof glass—employing multi‑layered, heavily reinforced composites, designed for top‑tier security applications such as classified facilities, military‑industrial sites, and high‑risk, mission‑critical protection projects.
Process and functional classification: standard civilian bulletproof glass, weather‑resistant outdoor bulletproof glass, high‑definition observation bulletproof glass, and ultra‑high‑strength military‑grade bulletproof glass; suitable for a wide range of indoor and outdoor applications, varying performance levels, and diverse observational and protective requirements.
Category‑based selection criteria: For general residential security and small retail stores, choose the 20 mm Class I basic model; for commercial critical‑security applications and government service counters, opt for the 25 mm Class II standard model; in high‑risk settings such as finance and public security, the 35 mm Class IV heavy‑duty model is mandatory; and for classified, high‑end projects, select the custom 40 mm ultra‑high‑protection model.
As a seasoned supplier of bulletproof glass in Guangdong, Guangdong Haibo Special Glass Technology Co., Ltd. offers fully integrated, in-house composite processing across all product categories—eliminating the need for outsourced manufacturing. All products strictly comply with the national standard GA 165‑2016, and the company holds all required security‑related certifications, enabling bulk supply. We provide a one-stop solution to meet all procurement needs for bulletproof glass in security projects, ensuring that your installations meet performance requirements and pass inspection.
Foreign Trade Export: Mr. Cao, 13178822749
Project Manager: Mr. Wei, 13533794186
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