Core Insights - The overall quality of photovoltaic (PV) components has significantly declined from 2017 to 2024, particularly noted from the end of 2023, aligning with the industry's cost reduction and price drop efforts [1][2] Group 1: Quality Assessment of PV Components - In a recent survey of 36 companies and 69 batches of PV components, 11 batches were found to be non-compliant, with 5 batches failing mechanical load tests, 8 batches not meeting the efficiency standards set by the Ministry of Industry and Information Technology, and 3 batches failing to meet power output standards [1] - The quality of PV glass, crucial for component safety, has deteriorated since 2022, reverting to early industry levels, with 3 out of 10 batches failing quality tests primarily due to bending strength issues [1] - The compliance rate for frame products has been consistently low, with a recent survey showing a compliance rate below 50%, mainly due to non-compliance in chemical composition and wall thickness [2] Group 2: Specific Product Quality Issues - The quality of solder ribbon products has seen a notable decline, with 26 out of 61 batches failing, primarily due to non-compliance in tin-lead content [2] - Although encapsulant products have historically had high compliance rates, recent surveys indicate issues with peel strength and mass density, with POE and EVA compliance rates around 80% and 85% respectively, while EPE compliance is below 80% [2] - The overall compliance rate for junction boxes in 2025 was reported to be below 50%, with failures concentrated in thermal performance tests of bypass diodes [2] Group 3: Recommendations for Quality Improvement - Six recommendations were proposed to enhance quality, including the establishment of guiding documents for performance indicators, strengthening regulatory sampling across the supply chain, and improving procurement standards to focus on material performance [3] - Increased monitoring and acceptance testing, along with enhanced inspection of existing power plants, were suggested to manage supplier credibility and ratings effectively [3] - Encouragement of outdoor empirical testing and the adoption of new standards and methods for quality control in procurement, acceptance, and inspections was also recommended [3]