Title: Breaking Through Output Control Barriers with "DC Link" – The Challenge of Solar + Storage Systems in Hokkaido Article Source: Solar Journal Solar + Storage System Q&A 1. What is DC Link? Answer: DC Link refers to a method in which the DC power generated by solar panels is charged directly into the battery without being converted to AC even once. Because the panels and battery are connected on the DC side, conversion losses are minimized and highly efficient operation is achieved. Since the system can be configured with a single hybrid inverter, it is ideal for new installations. 2. What is AC Link? Answer: AC Link refers to a method in which the DC power generated by solar panels is first converted to AC by an inverter, and then charged into the battery via a separate PCS (Power Conversion System). This configuration is suitable for retrofitting storage batteries to existing solar power generation systems. In Japan, many residential storage systems adopt this method. 3. What are the differences and relationship between DC Link and AC Link? Answer: The difference lies in whether the solar panels and battery are connected on the DC side or the AC side. Key differences: Number of conversions: DC Link requires 1 conversion (only during discharge), while AC Link requires 2 or more conversions. Efficiency: DC Link offers higher efficiency (approximately 90% or more), while AC Link is slightly lower. Equipment configuration: DC Link uses a single hybrid inverter, whereas AC Link requires an inverter plus a separate PCS (2 units). Ease of installation: DC Link is simpler, while AC Link is slightly more complex. Suitable application: DC Link is ideal for new installations, while AC Link is suited for retrofitting existing systems. Relationship: Both methods are ways to realize "solar + storage" systems, and share the common purpose of maximizing the effective use of generated power, responding to output control, and maximizing electricity sales revenue. 4. What is a Battery Inverter? Is it the same as a PCS? Answer: Yes, that is correct. A battery inverter is the same as a PCS (Power Conversion System). It is a device that performs bidirectional conversion between AC and DC, connecting the storage battery with the grid and loads. It converts AC to DC during charging and DC to AC during discharging. Differences based on coupling method: DC Link: Functions as a "hybrid inverter" where the solar inverter and PCS are integrated into one unit. AC Link: The PCS is installed separately from the existing solar inverter. SEAFOREST – Your Solar + Storage System Specialist SEAFOREST supports a wide range of solar + storage systems, from residential homes to industrial applications. Depending on your requirements and installation conditions, we can propose both DC Link and AC Link system configurations. Our systems maximize the utilization of solar-generated power in the ...

Where there is sun, there is SUNFOREST solar panel. Subject: [Special Feature] The Era of Flexible Solar Cells Unveiled by Japan’s New NEDO Guidelines – SUNFOREST Perovskite Product Lineup I. Policy Background: Japan Breaks Through Physical Limitations In March 2026, NEDO announced new design and construction guidelines for flexible solar cells. 1. Background: Land and rooftops suitable for conventional panels are nearly exhausted 2. Objective: Accelerate commercialization of lightweight, flexible thin-film technology (perovskite) 3. Impact: Enables installation on building facades and low-load-bearing roofs → creates new incremental market II. Technical Significance: A Step Toward Energy Independence 1. Challenge with conventional type: Heavy weight makes installation on lightweight roofs and vertical walls difficult 2. Advantage of flexible type: Lightweight and bendable → transforms building facades and non-load-bearing roofs into "power plants" 3. Future outlook: Integration with battery storage to build decentralized energy networks III. SUNFOREST Perovskite Product Lineup (1) Flexible Type (Curved Surface Compatible, Lightweight) 1. 300×300mm (1.7mm): 8.5W – 14.5W (consumer electronics, IoT, sensors) 2. 400×1000mm (1.7mm): 50W – 70W (mobile power, outdoor equipment) 3. 800×1000mm (1.7mm): 95W – 155W (curved roofs, vehicle integration) 4. 1600×1000mm (1.7mm): 195W – 315W (large-area curved installation, max efficiency 21%) 5. 1200×1600mm (1.0mm): 260W – 300W (industry's largest size, ultra-thin & lightweight) Common features: 1/10 to 1/5 weight of conventional panels, IP68, hail resistance (25mm / 23m/s) (2) Rigid Glass Surface Standard Type (High Efficiency, High Reliability) 1. 1200×600mm (7mm): 110W – 130W (efficiency 15.3% – 18.1%) 2. 1200×1600mm (12mm): 185W – 210W (translucent/color type, BIPV facade) 3. 1223×2308mm (35mm): 430W – 500W (ground-mounted, industrial roofs) Common features: IEC61215/61730 certified, 12-year product warranty, 25-year linear power warranty (3) Perovskite BIPV (Building-Integrated Photovoltaics) 1. Power-generating stone: 85W – 105W (solid/color), 75W – 95W (stone grain) / building-material-level durability 2. Power-generating curtain wall: 75W – 95W, 10% – 50% transmittance / color and size customizable 3. Solar roof tiles: 822×822mm, curved design / waterproof, anti-glare, replaces conventional roofing 4. Integrated industrial roof: Color steel sheet integrated design, wind pressure resistance 3600Pa, highest air/water tightness rating (4) Tandem Type (Next-Generation Ultra-High Efficiency) 1. Size: 2406×1156mm 2. Efficiency: 28.1% (lab prototype), theoretical 45% for 2-junction, 50% for 3-junction IV. Future Competitive Landscape 1. From price competition to value competition 2. Long-term stability (field data) 3. Architectural harmony (aesthetics, customization) 4. Environmental recycling compliance V. Contact Information Head Office: XIAMEN SEASHINE FOREST INDUSTRY AND TRADE CO., LTD. Room 2206, No. ...

Subject: Japan 50kW Low-Voltage Single-Phase / Three-Phase – SEAFOREST One-Stop Solution For 50kW-class low-voltage grid-connected solar power plants, here is a design proposal using Huawei power conditioners and SEAFOREST modules for your reference. 1. Design Overview Grid Connection: Low-voltage (Single-phase 200V / Three-phase 415V・380V) Total Capacity: 50kW class Power Conditioner: Huawei Modules: SEAFOREST 340W / 350W 2. Design Options (2 Patterns) 【A】Single-Phase 200V Configuration Power Conditioner: Huawei 4.95kW × 10 units (Total 49.5kW) Each unit: 2 MPPT channels, 2 input circuits Total input circuits: 24 circuits Modules: – 340W: 240 panels total, 81.6kW total capacity (24 panels per unit, 2-string configuration) – 350W: 240 panels total, 84.0kW total capacity (24 panels per unit, 2-string configuration) String configuration will be optimized according to on-site conditions. 【B】Three-Phase 415V / 380V Configuration Power Conditioner: Huawei SUN2000-50KTL-M3 (Low-voltage three-phase setting model) Capacity: 49.95kW, 4 MPPT channels, 8 input circuits Modules: – 340W: 146 panels total, 49.64kW total capacity (22 panels in series × 7 circuits) – 350W: 141 panels total, 49.35kW total capacity (23 panels in series × 6 circuits) *Note: The standard specification is medium-voltage (480V), but low-voltage (415V) grid connection is possible through firmware/settings adjustment. When purchasing, please confirm with the distributor that it is the “low-voltage setting version.”* 3. Important Design Considerations Low-Voltage Grid Connection Settings: When using the 50KTL-M3 model, confirm that it is set for low-voltage three-phase (415V) connection. Voltage Range: All configurations meet the MPPT voltage range (200V–1000V) and startup voltage (200V), ensuring stable operation even in early morning or evening during winter. Protection Coordination: Low-voltage grid connections are more susceptible to surges from the grid. Installation of AC surge protection devices (SPD) on the output side of the power conditioner is recommended. 4. Summary (Recommended by Application) For Single-Phase 200V Grid Connection: Option A (4.95kW × 10 units) For Three-Phase 415V / 380V Grid Connection: Option B (50KTL-M3 × 1 unit) 5. Application for Existing Equipment Replacement / Renewal Full Replacement (Panels + Power Conditioners): The proposed design can be applied directly. Panel-Only Replacement: Replace existing panels with SEAFOREST modules and adjust the connection configuration to match the existing power conditioner. Power Conditioner-Only Replacement: Use the power conditioner configuration from this proposal and combine it with a string configuration tailored to the existing panels. 6. Our Scope of Support Custom-Sized Panels: We offer custom manufacturing of panels to match existing mounting frames or to accommodate special installation environments. Power Conditioner Supply: We have a sales agreement with Huawei and can provide power conditioners through o...

Subject: SEAFOREST Residential Energy Storage System – One-Stop Solution (Subsidy Eligible) SEAFOREST has accumulated extensive experience in the installation of residential energy storage systems in Japan. We are pleased to share a recent case in Yamanashi Prefecture where our products (modules + inverter + battery) were adopted, successfully resulting in a subsidy approval. 1. Project Overview Installation Location: Rooftop, Yamanashi Prefecture (Residential) Modules: 590W N-TOPCon Bifacial Modules (JP-AC Registered Model: SF-D144N-590) × 20 pieces *Alternative: 560W lightweight flexible modules available (approx. 1/3 the weight of conventional modules)* Power Conditioning System (PCS): 10kW Off-Grid (PSE Certified) × 1 unit Lithium Iron Phosphate Battery: 51.2V 102Ah (PSE Certified) × 4 units = Total 20kWh *(10kWh / 15kWh options also available upon request)* Battery Outdoor Enclosure: Integrated air conditioning unit (heating + cooling) × 1 unit Cables: 50mm² / 25mm² / 4mm²+6mm² × 1 set MC4 Connectors: MC4 Equivalent × 10 pairs 2. Key Features Subsidy Application Support: The modules, batteries, and roof installation work are all eligible for Japanese government subsidies. SEAFOREST provides comprehensive one-stop support throughout the application process. High Efficiency & Reliability: Equipped with JP-AC registered N-TOPCon bifacial modules and PSE-certified inverter and batteries. Lightweight Option: For rooftop load concerns, a 560W lightweight flexible module option is available, weighing only about 1/3 of conventional modules. Safe & Reliable Storage System: Lithium Iron Phosphate (LFP) batteries ensure safety and long service life. The standard-equipped outdoor enclosure includes fire safety and climate control features, ensuring stable operation even in winter temperatures below 0°C. 3. SEAFOREST One-Stop Support System SEAFOREST provides comprehensive support for your project from start to finish: System Design: Optimized system design tailored to your installation environment Product Supply: One-stop provision of modules, PCS, batteries, enclosures, and cabling Installation Guidance: On-site guidance and advice based on specific conditions After-Sales Support: Dedicated Japanese contact point and remote technical support Subsidy Documentation Assistance: Full support for required subsidy application documents With our dedicated Japan contact office, we provide thorough remote support covering everything from installation to operation, ensuring a smooth experience even for distant locations. 4. Inquiries If you are interested in this system, please feel free to contact us: Headquarters: XIAMEN SEASHINE FOREST INDUSTRY AND TRADE CO., LTD. Add: Room 2206, No. 6 Hubin East Road, Xiamen, Fujian, China. ZIP: 361010 Tel: +86-592-5657925 Fax: +86-592-5628163 Mobile: +86-1360-6089-112 (Also available on WhatsApp) Contact Person: Kaku Guo Website: www.seaforestpv.com Japan Office: Eri Ezaki: +81-80-4667-6168 Perovskite Panel Agent in...

Subject: 600MW/2.4GWh Energy Storage Project Launched in Inner Mongolia, China The Alxa Dingyuanying independent energy storage project in Inner Mongolia has completed filing with 600MW/2.4GWh capacity and 4-hour duration. Total investment is 2.163 billion yuan. Construction runs from March 2026 to June 2027. The facility will connect to a 500kV substation, supporting grid peak shaving, frequency regulation, and renewable energy integration. Seaforest provides grid-side storage equipment including 2MW PCS and 4-10MWh batteries from CATL, Huawei, and CALB for peak shaving applications, with proven track records in Japan and worldwide. Contact: Guo Xiaozhou Tel: +86-592-5657925 Mobile/WhatsApp: +86-136-0608-9112 Web: www.seaforestpv.com

Where there is sun, there is a SEAFOREST solar panel. SEAFOREST Flexible Solar Panels: Lightweight, High-Strength, Easy-to-Install Next-Generation Solution 1. Trusted Track Record in Japan Our flexible panels have achieved JPEA registration and cleared stringent quality standards such as TUV certifications, with a proven track record of stable supply to the Japanese market. Recently, we have exported flexible panels totaling 5MW (100 pallets) to Japan, further solidifying our reliability and reputation. 2. SEAFOREST TUV-Certified Standard Products (Product Insurance Included / 12-Year Product Warranty / 25-Year Linear Power Warranty) The 520W model (SF-520M-FL) we previously delivered has now been discontinued, but we offer successor high-efficiency models. We currently provide the following 5 models as our main lineup: 560W (SF-560M-FL): 2240 × 1190 × 1.8mm 375W (SF-375M-FL): 1514 × 1200mm 280W (SF-280M-FL): 1146 × 1200mm 186W (SF-186M-FL): 778 × 1200mm 91W (SF-91M-FL): 410 × 1200mm All products feature N-type cells, are TUV-certified, include product insurance, and come with a 12-year product warranty and 25-year linear power output warranty. 3. SEAFOREST's Unique Technological Advantages ① Crack Resistance: In addition to optimizing wafer pre-treatment for TOPCon cell structures, we implement a unique "Ultra-High Aspect Ratio Fiber Reinforcement Layer" developed based on over 20 years of technological accumulation at the Chinese Academy of Sciences. This "invisible armor" protects fragile cells, achieving both lightweight design and high strength. It has also passed rigorous hail impact tests (test report attached). ② Wind & Snow Load Resistance: Wind tunnel tests were conducted at TUV SÜD and Tsinghua University Hefei Institute for Public Safety Research according to the GJB 150.21A-2009 standard. Modules showed no damage after continuous 10-minute exposure to winds of 56.2–58.8 m/s (equivalent to category 17 typhoon force) from both frontal and side directions. The product also withstands a 5400Pa front load test (equivalent to approx. 2m of snow). ③ Environmental Adaptability: The module surface features a highly weather-resistant fluorine resin film. Our flexible modules have achieved Severity Level 6 in the TUV SÜD salt spray test, complying with the IEC 61701:2020 standard, demonstrating sufficient durability in corrosive salt-laden environments (certificate attached). 4. SEAFOREST's Diverse Features ① Ultimate Lightweight: 2.9kg/m² (frameless), 4.5kg/m² (with frame) ② Anti-Microcrack Technology: Special cell processing ensures zero microcracks even under bending or impact ③ Exceptional Wind & Snow Resistance: Passed 56m/s wind tunnel test and 5400Pa load test (equivalent to 2m snow) ④ Innovative Installation: Adhesive bonding or dedicated clamp fixation (no rails required) offers excellent workability and maintainability ⑤ Environmental Adaptability: 1.8mm thin design enhances heat dissipation; fluorine resin coating provides se...

Subject: SUNFOREST Perovskite Panels – Introduction to Malaysian Market and Product Specifications 1. SUNFOREST Report on Malaysian Market Introduction We are pleased to inform you that, as a test introduction project in the Malaysian market, we have received an order for 20 units of 100mm×100mm flexible perovskite panels and 30 units of 50mm×50mm flexible perovskite panels. The export has been successfully completed. (Attached: Product photos, packaging photos, and test report) 2. SUNFOREST Mass Production Product Lineup We currently offer the following perovskite panel specifications for mass production: ① Flexible Type (Bendable) 300mm × 300mm × 1.7mm: 10W specification (Model: SF-10M-PS) 1600mm × 1000mm × 1.7mm: 200W specification (Model: SF-200M-PS) ② Glass Type (High Durability / Building Integrated) 1200mm × 600mm × 7mm: 115W specification (Model: SF-115M-PS) 2308mm × 1223mm × 35mm: 450W specification (Model: SF-450M-PS) 3. Key Features of SUNFOREST Perovskite Solar Cells ① High Power Generation Efficiency in Low Light Conditions Perovskite panels generate stable power even in rainy, cloudy, or indoor light conditions — environments where traditional silicon-based solar cells struggle. ② Excellent Flexibility and Customization The flexible design allows installation on curved surfaces such as circular buildings or curved roofs, greatly expanding installation possibilities. ③ Superior High-Temperature Performance With an extremely low temperature coefficient, power output decreases minimally even in high summer temperatures, resulting in higher effective power generation. 4. Contact Information Head Office: XIAMEN SEASHINE FOREST INDUSTRY AND TRADE CO., LTD. Add: Room 2206, No. 6 Hubin East Road, Xiamen, Fujian, China. ZIP: 361010 US Company: SEA FOREST ENERGY STORAGE SOLUTION CORP Japan Office: Eri Ezaki: 080-4667-6168 Japan Agent for Perovskite Panels: AIYU SOLAR CO., LTD. Add: 4-3-21-702 Hirado, Tarumi-ku, Kobe City, Hyogo Prefecture, Japan 655-0892 Contact Person: Kaku Guo Tel: 0086-592-5657925 Fax: 0086-592-5628163 Mobile / WhatsApp: 0086-1360-6089-112 Website: www.seaforestpv.com Company Philosophy: "Honesty, Altruism, Innovation, Initiative" Over 14 years of experience in new energy trade with Japan.

Where there is sun, there is a SEAFOREST solar panel. SEAFOREST Flexible Solar Panels ～Next-generation solution featuring light weight, high strength, and curved surface installation～ 1. SEAFOREST's Proven Track Record in Japan and Construction Performance ①, Our SEAFOREST framed flexible solar panels have cleared strict Japanese quality standards and performance evaluations (such as JPEA registration), and have a proven track record of stable supply to Japan. ②, Unlike complex adhesive methods, our construction using dedicated crimping fittings allows us to present a clear mechanical fixing basis in calculation documents, providing strong support for passing various applications and inspections. ③, The simple construction method, which does not require rails, makes it possible to significantly shorten construction periods and reduce costs. 2. High-Efficiency, High-Output Model Lineup ①, 520W Framed Flexible Panel (Model with proven track record of deliveries to Japan) The "SEAFOREST Framed Flexible Solar Panel" is a product with a nominal maximum output of 520W and external dimensions of 2250mm × 1200mm × 35mm (including frame). The output tolerance is guaranteed at 0 to +5W (positive tolerance). Its electrical characteristics are: Voltage at Maximum Power (Vmp) 42.04V, Current at Maximum Power (Imp) 12.37A, Open Circuit Voltage (Voc) 49.90V, Short Circuit Current (Isc) 13.09A, and Maximum System Voltage 1500V. We already have a delivery record of 85 units for this model. ②, Latest 560W N-TOPCon High-Efficiency Model The latest model achieves a maximum output of 560W, with Vmp 45.29V, Imp 12.37A, Voc 53.05V, Isc 12.96A, and a module conversion efficiency of 21.0%. 3. SEAFOREST Flexible Panel Unique Technological Advantages Our flexible panels utilize proprietary technology to achieve performance and reliability surpassing conventional products. ①, Ultimate Lightweight Design Weighing only 2.9kg/m², it is less than 30% of the weight of traditional glass modules (11-14kg/m²). This minimizes the additional load on existing roofs. ②, Exceptional Flexibility Achieving a bending radius of 0.3m, it perfectly conforms to curved or specially shaped roofs of factories, warehouses, gymnasiums, etc. ③, Innovative Anti-Micro Crack Technology Through specialized cell processing and encapsulation technology, cracks do not occur under bending or impact. It achieves zero power degradation after both the IEC-standard hail impact test and a continuous 10,000-cycle bend test at the minimum 0.3m bending radius. ④, Superior Wind and Snow Load Resistance It has passed a 17-grade wind tunnel test (wind speed 56m/s) and a 5400Pa front load test (equivalent to approx. 2m of snow accumulation), demonstrating durability to withstand harsh climatic conditions. ⑤, Innovative Installation Methods Installation is possible via direct adhesion (no mounting frame required) or dedicated clamp fixation (no rails required), offering excellent construction simplicity, cost reduction,...