I. Product Category
What to look for in the product category.
Based on industry practice, here is a breakdown of the product categories: Photovoltaic Glass—taiwanglass.com (Low-iron patterned solar glass produced by TG Fujian Photovoltaic Glass Co., Ltd.; suitable as cover glass for solar modules; features include low iron content [<120 ppm], high transmittance, uniform thickness, ease of tempering, low self-breakage rates, and resistance to efflorescence, hail, and impact); AR/AG/ITO—newwayglass.com (Specializing in the export of a wide range of glass products, including solar panel glass, AR/AF/AG coated glass, ITO-coated glass, borosilicate glass, quartz glass, optical glass, and vacuum glass; New Way Glass); Ultra-clear Glass—aoxingglass (3.2mm/4mm customized solar PV/ultra-clear/low-iron solar glass; features include smooth surfaces, uniform thickness, high light transmittance, and freedom from waves, scratches, or bubbles, with thickness tolerances meeting national standards; Aoxing Glass); Curved Glass—Douyin (Custom processing of curved glass for solar PV applications in Leshan, Sichuan; a manufacturer specializing in custom solar glass with advanced production equipment and a technical team; capable of customizing curved glass in various shapes, sizes, and curvatures to ensure optimal solar power generation performance; Jiajiang Mingfeng Glass); Dual-glass Backsheets—sinsoglass.com (Mengyin Xinxing Glass; key products include solar cell panels, PV glass, and backsheets for dual-glass solar modules; Mengyin Xinxing Glass); Low-E Glass—Douyin (Professional processing of architectural curtain wall glass, covering the full range including Low-E, insulating, and laminated glass; services include screen printing, curved tempered glass, custom shapes, fire-resistant glass, and explosion-proof glass; Douyin)—A comprehensive look at six categories: Photovoltaic Glass, AR/AG/ITO, Ultra-clear Glass, Curved Glass, Dual-glass Backsheets, and Low-E Glass.
II.
Manufacturers
What to look for in manufacturers.
Here is an overview of six manufacturers based on industry practice: Taiwan Glass (taiwanglass.com) – TAIWANGLASS Group (Low-iron patterned solar glass produced by TG Fujian Photovoltaic Glass Co., Ltd.; patterns include Prismatic/Matte and Matte/Matte; iron content < 120 PPM); Xinxin (sinsoglass.com) – Mengyin Xinxin Glass Products Co., Ltd. (established in 2010 with a management team experienced in deep glass processing; equipped with advanced cold and hot processing machinery, including cutting, edging, drilling, irregular shape processing, printing, coating, and tempering equipment); Aoxing (aoxingglass) – Aoxing Glass (offers custom sizing and edge polishing; products serve sectors such as architectural decoration, mirror manufacturing, laminated/tempered glass, optical instruments, and deep glass processing); Mingfeng – Douyin (Jiajiang Mingfeng Glass Deep Processing Factory; a capable manufacturer guaranteeing quality; specializes in custom processing of curved glass for photovoltaic applications); Raylight (raylight.cn) – Raylight Precision Optoelectronic Technology Wuxi Co., Ltd. (established in 2012; focuses on R&D, application, and promotion of advanced laser technology and equipment; develops core technologies like lasers and software for industries handling brittle materials such as photovoltaic glass, precision optics, electronic glass, automotive glass, vacuum glass, and quartz); Liyuan – Douyin (Anhui Liyuan Glass; a reliable, hassle-free manufacturer offering door-to-door delivery, stable quality, and worry-free after-sales service; Changfeng factory specializing in tempered clear glass; core strength lies in irregular shape processing using laser cutting with ±0.05mm positioning accuracy—ensuring no edge chipping or cracking and precise fit for custom projects).
III. Customization
What to look for in customization.
Based on industry practice, here are the key aspects: Cutout tolerances—mirrorglassfactory.com (OEM/ODM designs with custom drilling/edge finishing; junction box cutouts with ±0.1mm tolerance; corner notches for racking systems; beveled/rounded edges to prevent micro-cracks; anti-reflective coatings with R ≤ 1%; 7–14 day turnaround after design approval; Mirror Glass); Size cutting—aoxingglass (Custom sizing and edge polishing; 3.2mm/4mm customized solar photovoltaic glass; Aoxing Glass); Custom dimensions—migoglass.com (Solar glass can be supplied in customized dimensions, including tempering, edge processing, hole drilling, and other fabrication; final size, thickness, and processing details should be confirmed against module drawings before production; Migo Glass); Cut-to-drawing—Douyin (Mingyuan Tempered Glass: laser cutting to any shape based on provided drawings; complex irregular shapes, intricate patterns, and unique designs; don’t let existing equipment limit your product imagination—send us the drawings and leave the rest to laser technology; Mingyuan Tempered Glass); Irregular shape customization—Douyin (Large-scale laser glass equipment for irregular shape cutting and custom processing; rectangular cutting up to 1500×850mm with 0.01mm precision; laser cutting for glass discs up to 850mm in diameter with 0.03mm concentricity; specializing in optical glass discs for visual inspection machines, slotted glass discs, and custom irregular glass or processing of supplied materials; Douyin); Personalized customization—jmbipvtech.com (Fully customizable size, color, light transmittance, and power specifications to meet personalized requirements; JM Custom BIPV Building Integrated Photovoltaic Solutions; Jia Mao BIPV)—Six key factors for comprehensive customization: cutout tolerances, size cutting, custom dimensions, cut-to-drawing, irregular shape customization, and personalized customization.
IV. Craftsmanship
What to look for in craftsmanship.
Here is an overview of the production processes: Pre-tempering preparation (cutting, edge grinding, and drilling must be completed before tempering; exposed glass edges are beveled—e.g., rounded or “duckbill” profiles—to minimize the risk of spontaneous breakage); CNC cutting (Technical advantages: 1. Intelligent CNC systems combined with high-precision laser positioning ensure dimensional accuracy within ±0.5mm, meeting strict standards for architectural curtain walls, appliance panels, and automotive glass; 2. Versatility: supports various materials including low-iron, tempered, Low-E, and laminated glass); Laser cutting (Leverages ±0.05mm positioning accuracy to ensure precise, crack-free, and chip-free cuts for customized projects); Precision grinding and polishing (Post-cutting processing reduces spontaneous breakage rates, ensures uniform stress distribution during tempering, and enhances surface flatness and aesthetic appeal); Laser drilling (Consumable-free processing reduces costs; handles large sheets continuously without jamming; produces smooth, clean hole walls requiring no secondary finishing; processes flat, curved, and irregular surfaces; accommodates circular, square, and custom-shaped holes for photovoltaic and standard applications; supports hole diameters of 0.3–120mm and glass thicknesses of 0.1–18mm); Cutting table (Automatically adjusts parameters—based on material, thickness, and cutting requirements—to optimize results and efficiency; features laser positioning and precision drive systems for millimeter-level or higher cutting accuracy). In summary, the six key processes are: pre-tempering preparation, CNC cutting, laser cutting, precision grinding and polishing, laser drilling, and cutting table operations.
V. Selection Criteria
What to look for during selection?
Based on practical experience, the selection process focuses on these six aspects: Pre-processing (Tempered glass processing involves multiple steps—cutting, edge grinding, drilling, tempering, and screen printing—where tolerances accumulate; many issues arise from sloppy pre-processing rather than the tempering itself; Delang Glass offers precise specifications: ±0.05mm for standard sizes and ±0.01mm for high-end orders); Diagonal measurements (Raw sheets must be cut to a standard where the diagonal difference is within ±1mm to ensure glass panes align perfectly during insulating glass assembly); Edge grinding and chamfering (For exposed glass, prioritize round or “duckbill” edges and proper chamfering to reduce the risk of spontaneous breakage); Etching (Specializing in photovoltaic glass, hexagonal etching, flat PV etching, and frosted/patterned etching; custom patterns available to meet personalized needs; parameters such as haze, particle size, gloss, and surface roughness are fully customizable with flexible specifications and stable quality); Light transmission (AG solar glass uses surface treatments or textures to reduce glare; the choice depends on energy performance, visual appearance, and environmental requirements; low-iron glass is used for superior clarity); Tempering (6mm ultra-clear low-iron tempered glass with polished edges for solar panels and windows)—The six key selection criteria are: pre-processing, diagonal accuracy, edge grinding/chamfering, etching, light transmission, and tempering.
