At Sresky, we are committed to providing high-quality solar street lights to our customers worldwide.
We understand that quality is the foundation of every successful project. Therefore, each of our solar street lights undergoes a rigorous quality control process to ensure that every product meets the highest standards, providing our customers with long-term reliability and satisfaction.
What is our quality control process?
Step 1: Raw Material Inspection
We strictly screen and inspect every batch of raw materials. All suppliers are required to meet international quality standards and undergo rigorous certification to ensure that the raw materials supplied are free from hidden defects. Before production, each batch of raw materials undergoes thorough sampling and testing to verify their durability and safety in different environments. Particularly for the procurement of solar panels and LED beads, we select industry-leading materials to ensure high performance and long lifespan.
Step 2: Precision Manufacturing
The manufacturing process is a key element in ensuring quality. We use advanced automated production equipment combined with experienced technicians to ensure the precision and consistency of each component. Each solar street light component undergoes multiple rounds of precise calibration to ensure its stability and high performance, even in extreme temperature conditions. Through advanced laser cutting, CNC machining, and other technologies, we ensure that the fit of each component is optimized to avoid performance loss due to improper part alignment.
Step 3: Comprehensive Testing
Each product undergoes a rigorous testing process to ensure high performance and durability:
- Weather Resistance Test: Our solar street lights are tested under extreme weather conditions such as high temperatures (over 50°C), low temperatures (as low as -30°C), heavy rain, and strong winds to ensure stable operation in various climates.
- Impact Resistance Test: Our street light designs are built to withstand strong impacts, such as vehicle collisions and hailstorms, ensuring that the product remains undamaged in real-world conditions.
- Efficiency Test: We test not only the conversion efficiency of the solar panels but also the charging and discharging capabilities of the batteries to ensure they maintain stable brightness over time and perform efficiently under various lighting conditions.
Step 4: Comprehensive Quality Inspection
Before leaving the production line, we conduct a final, thorough quality check. Each product must pass a comprehensive functionality test to confirm that all parts—solar panels, lamps, sensors, etc.—are working perfectly. The quality control team performs multiple verifications of every detail to ensure each product meets our high standards, both in terms of appearance and functionality. With our intelligent inspection system, we automatically identify any minor defects and make necessary adjustments or replacements to ensure that every product is 100% qualified.
Step 5: Environmental Protection and Sustainability
We adhere to the principle of environmental protection throughout every phase of our solar street lights production, from design to manufacture.
Environmentally friendly materials used:
- Solar Panel Materials: We use high-efficiency monocrystalline silicon solar panels with a lifespan of up to 25 years. The low-iron, ultra-white tempered glass is environmentally friendly and improves light transmittance and anti-aging properties.
- Batteries: We use lithium-ion and lithium iron phosphate (LiFePO4) batteries. Lithium-ion batteries are lightweight and energy-dense, effectively meeting power requirements, while LiFePO4 batteries have a longer cycle life (1000–2000 cycles) and superior safety. These batteries comply with international environmental standards and pose no risk of harmful metal leakage.
- Plastic Parts: We select pure ABS and polycarbonate (PC) raw materials, which have passed UV anti-aging and salt spray tests to ensure long-term durability.
- Hardware and Brackets: We use ADC12 aluminum alloy and Q235 steel, with a double-layer anti-corrosion spraying process, enhancing corrosion resistance, especially for coastal and high-salinity environments.
- Corrosion-Resistant Screws: We use SUS304 stainless steel screws, eliminating the rust issues associated with traditional iron screws.
Reason:
- Meet Different Needs: Lithium-ion batteries are suitable for lightweight applications, while LiFePO4 batteries are ideal for scenarios requiring higher safety and longer service life.
- Extended Product Life: High-quality materials such as monocrystalline silicon and lithium batteries reduce the need for frequent replacements, minimizing waste.
- Reduced Environmental Impact: The use of recyclable materials reduces ecological stress, while non-toxic coatings prevent the leakage of hazardous substances.
- Energy Efficiency: Efficient materials and optimized technologies, such as ALS and TCS, increase energy efficiency and reduce carbon emissions.
Difference from Other Companies:
- Strict Control of Raw Materials: We inspect every batch of raw materials, whereas many companies rely on their suppliers’ quality control processes, which may introduce quality risks. Our strict control ensures that every product is flawless.
- Precise Manufacturing Process: Many companies use traditional production lines, which may not guarantee the precision of each product. We combine advanced automated equipment with manual inspection to ensure that each street light meets industry standards for precision and stable performance.
- Comprehensive Performance Testing: While other companies may only conduct basic functional tests, we test each street light under extreme conditions to ensure stable operation in severe weather such as high temperatures, low temperatures, strong winds, and heavy rain, catering to global climate conditions.
- Comprehensive Quality Inspection: While many companies only perform partial inspections, we conduct a final comprehensive quality check before the product leaves the factory to ensure it meets Sresky’s high standards for appearance, functionality, and safety.
Why Choose Sresky?
Through our rigorous quality control process, we ensure that every solar street light can operate reliably in various environments. Our specialized manufacturing and testing processes set us apart from others in the industry, guaranteeing that each street light you receive is of the highest quality.
For customers seeking high reliability and long-lasting durability, choosing solar street lights from Sresky is a decision you can trust.