Dongguan Rongsheng New Energy Technology Co.,ltd(HEREINAFTER REFERED TO AS ROSUN SOLAR) is a high-tech enterprise specialized in the R&D,Production,Sales and Service of solar power systems, Products include Home Storage System,Portable Energy Storage System,and solar street lights and Photovoltaic Our boss has been in this line nearly 20 years,he is also an Engineer, we have our own professional D&R team.In the past decades, ROSUN SOLAR always produce OEM and ODM for domestic group company(STATE GRID, BYD,CHERY Holding,ECTC etc) & trading company. Our products have been exported to USA,UK, Germany,France,Spain,Japan,Southeast Asia,,South America, Middle East, Africa, Australia and so on.We strictly carry out ISO 19001: 2008 quality system and ISO 14001 environment management system. and has professional production equipment: aging test equipment, welding equipment, high and low temperature test cabinets, tensile strength testers, salt spray test equipment, automatic battery pack equipment, and finished battery pack testing equipment. The company has a professional technical team, high standard automation equipment, professional SAP management system, and comprehensive quality identification traceability system.The raw material part of our products is specially used in the industry top5 cells (CATL, BYD, SOLVT,Guoxuan, Yiwei, Lishen, etc.), fully meet the domestic industry testing requirements, such as IEEE1725, IEEE1625, UN38.3, GB/T 31241-2014.The company's products are guaranteed for more than 2 years, and any quality problems will be answered within 24 hours and solutions will be given within 48 to 72 hours.About our quality assurance.1. System management: 1) We strictly follow the quality system operation ISO9001,CCC,ISO14001,OHSAA18001, 2) Regular training for staff (every 2 weeks) 3) QC of incoming materials, QC of semi-finished products, QC of finished products.2. Material control: 1) Regular system and process audits. 2) Supplier scorecard. 3) DPPM control/COC, 4) SCAR/8D. 5) Manufacturing lot number tracking. 6) Focus on operation guidance, procedure documents. 7) Material first acknowledgement. 8) MRB/RTV 9) Contractor maintenance 10) Contractor development.3. Process control: 1) PEMEA control plan, 2) Open pull inspection and first article inspection 3) Stop pull, alarm 4) Product traceability 5) Quality report & RCCA 6) AQL sampling and quality plan 7) Periodic line audit 8) Isolation and clear procedures 9) Training and validation 10) Critical process CPK control 11) Gage R&R 12) Product safety and reliability4. Customer Orientation: 1) Customer Satisfaction 2) Customer Scorecard 3) Customer Audit 4) Defective Follow up 5) DPPM Report 6) RCCA 7) Regular Quality Meeting (every 2 weeks)