Solar PV Equipment & Components.
Solar PV Equipment Wholesale – Solar Panels, Inverters & Mounting Systems | SIYUNJO INTERNATIONAL
About This Category
Our Solar PV Equipment & Components line covers the complete solar photovoltaic system value chain — from generation (panels) to conversion (inverters) to mounting (structures) to monitoring (data loggers). With global solar installations expected to exceed 500 GW annually by 2027, the demand for reliable, cost-effective solar components has never been higher. We source from Tier-1 manufacturers in China’s Yangtze River Delta solar cluster, ensuring bankable quality and competitive pricing for utility-scale, commercial, and residential projects worldwide.
Wholesale solar PV equipment including monocrystalline and bifacial solar panels, string inverters, microinverters, mounting systems and monitoring solutions. TUV, CE, IEC certified. MOQ 500 units. Factory-direct pricing.
SIYUNJO INTERNATIONAL
Product Range:
1. Solar Panels
· Monocrystalline solar panels (100W-600W)
· Polycrystalline solar panels (100W-450W)
· Thin-film solar panels
· Bifacial solar panels
· Flexible solar panels for portable applications
· All panels come with 25-year performance warranty and 10-year product warranty
2. Inverters
· On-grid string inverters (1kW-100kW)
· Off-grid inverters (1kW-50kW)
· Hybrid inverters (1kW-30kW)
· Micro-inverters (300W-1500W)
· Central inverters for utility-scale projects (100kW-1MW+)
· All inverters include WiFi monitoring and 5-10 year warranty options
3. Mounting Systems
· Roof mounting systems (tile roof, metal roof, flat roof)
· Ground mounting systems (fixed, adjustable, tracking)
· Solar carport mounting systems
· Floating solar mounting systems
· Made from aluminum alloy or stainless steel, corrosion resistant, 20-year warranty
4. Charge Controllers
· PWM charge controllers (10A-100A)
· MPPT charge controllers (10A-100A)
· Suitable for 12V/24V/48V systems
· Overcharge, over-discharge, and short circuit protection
5. Balance of System Components
· Solar cables (PV1-F 4mm², 6mm², 10mm²)
· MC4 connectors and extension cables
· Combiner boxes (2-24 strings, with or without surge protection)
· Fuses, circuit breakers, and disconnect switches
· Monitoring systems and accessories
Technical Specifications Table:
| Product Type | Power Range | Efficiency | Warranty | Certification |
| Monocrystalline Panel | 100-600W | 20-23% | 25 years | CE, RoHS, UL, IEC |
| Polycrystalline Panel | 100-450W | 18-20% | 25 years | CE, RoHS, UL, IEC |
| String Inverter | 1-100kW | 96-98% | 5-10 years | CE, RoHS, UL, IEC |
| MPPT Charge Controller | 10-100A | 99% tracking efficiency | 2 years | CE, RoHS |
| Mounting System | Custom | N/A | 20 years | ISO 9001, CE |
Applications:
· Residential rooftop solar systems
· Commercial and industrial solar installations
· Utility-scale solar power plants
· Off-grid solar systems for rural areas
· Portable solar power solutions
· Solar-powered IoT and smart city applications
Key Features:
| Product | Key Specifications | Certifications | MOQ | FOB Price (per unit) |
| Monocrystalline Solar Panel 450W-700W | 450W-700W, 21-22.5% efficiency, 144-156 half-cut cells, 10-12BB | TUV, CE, IEC 61215, IEC 61730 | 500 pcs | $0.10 – $0.20/W |
| Bifacial Solar Panel 550W-670W | 550W-670W, 22-23% bifacial, dual-glass, transparent backsheet | TUV, CE, IEC 61215, IEC 61730 | 500 pcs | $0.12 – $0.22/W |
| String Inverter 5kW-125kW | 5kW-125kW, 2-12 MPPT, 98.7% max efficiency, IP65 | CE, VDE, IEC 62109, EN 50530 | 100 units | $0.05 – $0.10/W |
| Microinverter 600W-2000W | 600W-2000W, 1-4 panels per unit, module-level MPPT, 97.5% efficiency | CE, FCC, UL 1741, IEC 62109 | 500 units | $0.12 – $0.25/W |
| Solar Mounting System | Pitched roof, flat roof, ground mount options, aluminum + stainless steel | CE, SGS, wind load 60m/s | 100 sets | $0.03 – $0.08/W |
Monocrystalline Solar Panel:
High-efficiency PERC (Passivated Emitter and Rear Cell) technology. Half-cut cell configuration reduces internal resistance and improves performance in partial shading conditions. 10-12 busbar design enhances current collection efficiency. Anti-PID (Potential Induced Degradation) technology ensures long-term reliability. 25-year linear power output guarantee with 0.55% annual degradation.
Bifacial Solar Panel:
Dual-glass construction with transparent backsheet allows light absorption from both front and rear sides, increasing energy yield by 5-30% depending on ground albedo. 2.5mm tempered glass on both sides provides enhanced durability and fire resistance (Class A). Suitable for ground-mount, carport, and floating solar applications.
String Inverter:
Multi-MPPT design optimizes energy harvest from arrays with different orientations and tilts. Fan-less cooling (select models) for silent operation and reduced maintenance. Integrated DC switch and AC circuit breaker for installation safety. Wi-Fi or 4G communication for remote monitoring. Compatible with all major solar panel brands.
Microinverter:
Module-level MPPT ensures each panel operates at its maximum power point independently, eliminating mismatch losses. Rapid shutdown compliant for NEC 2017/2020 safety requirements. 25-year design life with 12-year standard warranty. Plug-and-play AC connection simplifies installation. Real-time per-panel monitoring via web portal and mobile app.
Solar Mounting System:
Pre-engineered aluminum alloy and stainless steel construction for corrosion resistance. Adjustable tilt angles from 10-60 degrees for optimal seasonal performance. Compatible with all standard framed and frameless solar panels. Wind load rated to 60m/s (216km/h). Pre-assembled components reduce on-site installation time by 30%.
Quality Assurance
· All solar panels are produced in ISO 9001, ISO 14001, and OHSAS 18001 certified facilities.
· Each panel undergoes EL testing, power sorting, and visual inspection before shipment.
· Inverters are 100% burn-in tested at 45C for 4 hours.
· Mounting systems undergo salt spray testing (1,000 hours), tensile testing, and wind tunnel validation.
· Third-party inspections by SGS, TUV Rheinland, or Bureau Veritas available upon request.
Packaging & Shipping
· Solar panels: individual cardboard boxes with foam corners, 31 panels per pallet, 20GP container holds 310 panels (550W).
· Inverters: individual cartons with foam inserts, palletized.
· Mounting systems: pre-packed kits in cartons, labeled by project.
· Shipping: FOB Shanghai/Ningbo, CIF to major global ports.
· Container loading supervision included for FCL shipments.
Applications & Target Markets
· Utility-scale solar farms (10MW+), commercial and industrial rooftop systems (100kW-10MW), residential solar installations (3-20kW), solar carports, floating solar projects, and off-grid solar systems.
· Primary markets: Europe (strongest solar growth with REPowerEU), North America (IRA-driven market expansion), Australia (highest residential solar penetration), Middle East (large-scale projects), and Latin America (emerging solar market).
Ordering Information
· Project pricing: Volume discounts available for orders above 1MW.
· Sample panels: 2-5 units at wholesale price.
· Custom branding: minimum 5MW for panel OEM, 1MW for inverter OEM.
· Payment terms: 30% deposit, 70% before shipment for stock items; L/C at sight for project orders above $500,000.
· Technical support: system design assistance, PVsyst simulation reports, and installation supervision available.
Planning a solar project? Contact claire@siyunjo.com with your system size and location for a complete BOM quotation and PVsyst simulation within 48 hours.