Here's a professional English product description incorporating the key specifications you provided:

Introducing the High-Pressure Building Facade & Rooftop PV Cleaning Drone

This advanced cleaning drone is engineered for efficient, safe, and water-conserving maintenance of building facades and rooftop photovoltaic (PV) solar arrays. Operating effectively at heights of up to 150 meters, it eliminates the need for risky manual labor, scaffolding, or expensive crane access.

Key Specifications & Performance:

Application: Professional cleaning of building exteriors and rooftop solar panels.

Operating Altitude: Up to 150 meters (492 feet).

Cleaning Pressure: High-impact 4350 psi (pounds per square inch) for effective removal of stubborn dirt, grime, bird droppings, and pollutants.

Flight Time: Extended operational window of 13 to 38 minutes per battery charge (dependent on payload and flight conditions), maximizing productivity per mission.

Water Flow Rate: Efficient 16 liters (approx. 4.2 gallons) per minute, ensuring thorough cleaning while optimizing water usage compared to traditional methods.

Benefits:

Enhanced Safety: Removes personnel from dangerous heights and eliminates fall hazards.

Cost-Effective: Significantly reduces labor costs and expenses associated with access equipment (scaffolding, cranes).

Superior Cleaning Power: 4350 psi pressure ensures deep cleaning for improved building aesthetics and optimal solar panel efficiency.

Operational Efficiency: Rapid deployment, targeted cleaning, and reduced downtime for buildings or solar installations.

Water Efficiency: Precise application minimizes water waste compared to conventional high-pressure washing.

Accessibility: Reaches difficult or otherwise inaccessible areas on tall structures and complex rooftop layouts.

Ideal For:

Commercial high-rise window and facade cleaning companies.

Solar farm operation and maintenance (O&M) providers.

Building management companies.

Facility managers for large industrial or institutional buildings.

This high-pressure cleaning drone represents a revolutionary step forward in maintaining critical infrastructure, combining powerful performance with unparalleled safety and efficiency for facade and solar panel upkeep.

Key improvements and rationale:

Clear Title: "High-pressure Building Facade & Rooftop PV Cleaning Drone" immediately states the core function and application.

Strong Opening: Highlights the primary benefits (efficiency, safety, water conservation) and core application upfront.

Structured Specs: Uses bullet points for readability and separates "Key Specifications" clearly.

Clarity on Parameters:

"Up to 150 meters" clarifies the maximum operating capability.

"4350 psi" is standard notation.

"13 to 38 minutes per battery charge" explains the range and its dependency. Adding "(dependent on payload and flight conditions)" manages expectations realistically. "Up to 38 minutes" emphasizes the potential maximum.

"16 liters (approx. 4.2 gallons) per minute" provides the metric standard and a US customary equivalent.

Dedicated Benefits Section: Clearly articulates the value proposition (Safety, Cost, Cleaning Power, Efficiency, Water Savings, Accessibility).

Target Audience: Clearly identifies "Ideal For" sectors.

Professional Tone: Uses strong vocabulary ("engineered", "eliminates", "high-impact", "optimizing", "revolutionary step forward").

Application Focus: Repeatedly emphasizes the specific use cases (facades, solar panels) and their associated benefits (aesthetics, solar efficiency).

Safety Emphasis: Explicitly mentions removing fall hazards as a major benefit.

Conciseness: Combines related ideas efficiently while covering all provided specs and their implications.