Quality Control
Quality Control
High Quality Products Come from Stringent Quality Control Systems
Stringent quality control is the cornerstone of Deangshi’s manufacturing. Our customers have come to expect uncompromising quality standards in our products. To meet this expectation of high quality, we continue to invest in state-of-the art equipment and professional training of our employees . We are proud of our product quality and their reliable performance even in the most extreme conditions.
Deangshi has received certifications for Quality Management System (ISO 9001:2015), Environment Management System (ISO 14001:2015) and Occupational Health and Safety Management System (ISO45001：2018) from both DNV GL and GZCC.
Beyond IS09001 standards, Deangshi also applied for the national “GB T19580 2012 Criteria for Performance Excellence”. This regulates not only product quality, but also production waste, environmental burden, management foresight, etc., which are the necessities for an “excellent” company.
Coordinated Quality Control System
Material Control |
Production Control |
|
 Automatic Material Filtration and Sorting Spot Check Every Feedstock Batch Proper Storage at Fixed Temperature and Humidity Supplier Quality Engineering  Incoming-material Quality Assurance |
 300+ Quality Check Points 100% 3 Times EL Tests  HALM Inside Production Lines In-process Quality Control  Open Box Audit (OBA) Test |
QC Key Points
01. High Quality Starts from the Very Beginning
Deangshi performs thorough assessments of all incoming raw materials. There are overall 156 quality control tests including cell efficiency and pull strength detections, EL tests, EVA gel content tests, resistance test of J-box cable, and frame stability tests. All these tests guarantee that every batch of raw materials and every single component is up to Seraphim’s standard of quality.
02. 3 Times EL Tests in Production
Each Deangshi module has to pass 3 rounds of EL test:pre-lamination, post-lamination, and before packing. These tests minimize defective products while reducing the overall production costs.
03. HALM Inside for Performance Testing
All production lines in the Deangshi manufacturing plants are equipped with HALM photovoltaic product characterization testers. The German made H.A.L.M. performance tester uses state of the art Triple A+ level light source with a complex power regulation system and freely adjustable optical pulse settings. H.A.L.M. enables Deangshi to accurately and easily scan out the most important data of each module on the line, such as maximum power, temperature coefficient, and the low-irradiance performance in a relatively short time.
04. Innovations in QC, Improved Reliability
Deangshi innovates the QC process by installing modulator tubes behind the visual inspection checking machine. This fill-in light magnifies flaws like broken cells, micro-cracks, ribbon-less edge chips, etc. so that no defective module will be shipped to our clients. In the meantime, we use high resolution monitors to check whether the gaps between cells meet requirements. This series of quality control tests guarantees that modules function to all the technical specifications while maintaining visual uniformity.
05. Periodical Tests for Long-term Guarantee
Every quarter, Deangshi spot checks all types of modules being produced in the past three months, including thermal cycling, damp heat, PID, UV, humidity freeze, hot spot, and etc., to double check our product.
Deangshi performs thorough assessments of all incoming raw materials. There are overall 156 quality control tests including cell efficiency and pull strength detections, EL tests, EVA gel content tests, resistance test of J-box cable, and frame stability tests. All these tests guarantee that every batch of raw materials and every single component is up to Seraphim’s standard of quality.
02. 3 Times EL Tests in Production
Each Deangshi module has to pass 3 rounds of EL test:pre-lamination, post-lamination, and before packing. These tests minimize defective products while reducing the overall production costs.
03. HALM Inside for Performance Testing
All production lines in the Deangshi manufacturing plants are equipped with HALM photovoltaic product characterization testers. The German made H.A.L.M. performance tester uses state of the art Triple A+ level light source with a complex power regulation system and freely adjustable optical pulse settings. H.A.L.M. enables Deangshi to accurately and easily scan out the most important data of each module on the line, such as maximum power, temperature coefficient, and the low-irradiance performance in a relatively short time.
04. Innovations in QC, Improved Reliability
Deangshi innovates the QC process by installing modulator tubes behind the visual inspection checking machine. This fill-in light magnifies flaws like broken cells, micro-cracks, ribbon-less edge chips, etc. so that no defective module will be shipped to our clients. In the meantime, we use high resolution monitors to check whether the gaps between cells meet requirements. This series of quality control tests guarantees that modules function to all the technical specifications while maintaining visual uniformity.
05. Periodical Tests for Long-term Guarantee
Every quarter, Deangshi spot checks all types of modules being produced in the past three months, including thermal cycling, damp heat, PID, UV, humidity freeze, hot spot, and etc., to double check our product.