The "GB/T 41744-2022 Copper Indium Gallium Selenide Thin Film Solar Cell Substrate Glass" standard specifies the technical requirements, test methods, inspection rules, as well as marking, Encasement, transportation and storage requirements for the substrate Glass used in Copper Indium Gallium Selenide Thin Film Solar Cells. This standard focuses on the substrate Glass produced by the float process to ensure that its application performance and mass in solar cells meet the specifications. The standard covers the transmission characteristics, thermal expansion coefficient, dielectric characteristics of Glass, etc., and references the relevant flat glass and electronic Glass test standards to ensure the accuracy and reliability of the test results.