Photovoltaic (PV) glass, as an important material in PV module construction, often involves multiple glass suppliers due to the current production characteristics and development level of the industry. When quality issues occur, it is necessary to quickly, accurately, and effectively identify and distinguish the PV glass suppliers. This has become one of the focal points of the industry. Glass supplier information through four direct analysis methods of “module appearance”, “glass performance”, “surface morphology” and “glass composition”, as well as two indirect methods of “production records” and “module power data” were traced and distinguished, listing and comparing the advantages and disadvantages of various methods. In the process of traceability and distinction, it was necessary to balance the relationship between efficiency, accuracy and cost, paid attention to the changes in new industry equipment and cross-field developments, attached importance to cooperation with identification and testing institutions, promptly obtained the latest industry information, focused on operation standardization, and paid attention to the identification characteristics of products. At the same time, it relied on detailed data induction, analysis and deduction, as well as the production quality records of enterprises. The research results have certain guiding significance for the industry's code of conduct and sustainable development.