FAQ

WANLVSUNNY Buyer’s FAQ

From Product Selection to After-Sales Support

Q1: Who is WANLVSUNNY?

A : WANLVSUNNY (Wuxi Wanlv Intelligent Technology Co., Ltd.) is a leading Chinese tech enterprise specializing in photovoltaic (PV) cleaning system R&D, manufacturing, and service integration. With over a decade of expertise in mechanical engineering and solar energy, we deliver full-stack solutions—from manual cleaning implements to AI-powered robotic fleets—for utility-scale PV plants, distributed arrays, and agrivoltaic projects globally.

A : Photovoltaic modules suffer from PID (Potential Induced Degradation), soiling loss, and spectral attenuation due to dust, bird fouling, and atmospheric pollutants. Empirical data shows regular cleaning can restore ≥30% energy yield and extend module lifespan by mitigating hotspots and surface abrasion.

A : The gold standard involves semi-automated or fully automated cleaning systems (e.g., WANLVSUNNY’s dual-brush robots and high-pressure atomization units) that balance three pillars:
  • Efficiency: ≥99.9% soiling removal rate
  • Sustainability: Water-saving designs (up to 70% reduction vs. manual methods)
  • Safety: Non-abrasive cleaning cycles compliant with IEC 61215 module durability standards.

A : Cleaning intervals are determined by soiling rate models integrating meteorological data (dust deposition, rainfall), module tilt angle, and project location. For most regions, 2–4 cleanings/year suffice, while arid zones (e.g., Sahara periphery) require monthly maintenance with WANLVSUNNY’s dry-cleaning robots to prevent >20% efficiency loss.

A : Yes. Our portfolio includes:
  • Tracked robots (e.g., WLS-73S) for uneven terrains (mountains, gravel sites)
  • IP65-rated units for coastal/high-humidity environments
  • Thermal management systems for desert climates (operating temp: -25℃ to 60℃)
     
    All certified to withstand 1500Pa wind loads and 50mm/h rainfall intensity.

A : Our flagship models (e.g., WLS-7 Dual-Brush Robot) achieve 0.3L/m² water consumption, a 70% reduction compared to manual bucket-and-brush methods. For arid regions, we offer dry-cleaning variants with electrostatic dust adsorption technology, achieving waterless operation without efficiency compromise.

A (EN): Our offerings span three tiers:
  • Manual Tools: Single/double-head PV cleaning brushes (nylon-bristle, anti-scratch)
  • Semi-Automated Systems: High-pressure cleaning machines (flow rate: 15–30L/min, pressure: 5–10MPa)
  • Fully Automated Robots:
    • WLS-7 Series: AI navigation, dual-brush design (cleaning width: 1.2m, speed: 300m²/h)
    • WLS-73S Series: Tracked chassis, modular payload (compatible with dry/wet cleaning kits)
  • Custom Solutions: Turnkey cleaning systems for GW-scale PV plants (integrated with SCADA for remote scheduling).
A : Our competitive edge lies in four pillars:
  1. Technological Leadership: Patented dual-brush synchronous cleaning (patent No. ZL2023XXXXXX) and IoT-enabled performance monitoring.
  2. Reliability Engineering: Components rated for ≥5,000 working hours in -40℃ to 70℃ environments.
  3. Cost Efficiency: Factory-direct pricing with TCO (Total Cost of Ownership) reduction by 22% vs. competitors.
  4. Global Support: 24/7 technical assistance with localized spare parts hubs in Europe, MENA, and Southeast Asia.
A : Absolutely. Our desert-optimized models feature:
  • Dust-proof enclosures (IP66 rating) to prevent sand ingress
  • High-temperature lubrication systems (operating up to 65℃)
  • Water recycling modules (recovery rate: 85%) for regions with water scarcity
     
    Field tests in Dubai showed consistent 98.7% cleaning efficiency under 50℃ ambient temperature.
A : Yes. We provide:
  • OEM: White-label manufacturing with client branding (minimum order: 50 units)
  • ODM: Full customization of mechanical structures (e.g., brush length, robot dimensions) and software (UI/UX, cleaning algorithms)
     
    Typical lead time for customized orders: 8–12 weeks.
A : We showcase our solutions through:
  • Global Exhibitions: Intersolar Europe, REI Expo, and Solar Show MENA (check our website for 2025 schedules)
  • Virtual Demos: 3D product walkthroughs and live cleaning process videos on our YouTube channel (@WANLVSUNNYTech)
  • Case Studies: Detailed reports on efficiency gains from projects in Germany, Australia, and Saudi Arabia (available via our technical library).

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