Strict Quality Control
We build quality into every stage—materials, processes, and final verification. Our ISO-based quality system covers 40+ in-process checks and 70+ final inspections, with full documentation, traceability, and rapid response to field feedback.
Guarantee of Excellent Quality
Independent Quality Control Team
We have a dedicated QC team responsible for inspecting the quality of raw materials and finished products. All incoming material reports, sampling reports, and finished product inspection reports are prepared and maintained by this team. Our finished product inspection reports undergo dual reviews by both the quality control and business departments, ensuring that our products meet 100% of customer quality requirements.
Standardized Management
We strictly abide by ISO9001 and 6S management standards to ensure that we always meet high standards in quality management and production processes. As our valued customer, you can trust that our products consistently meet high quality standards while enjoying more competitive prices and faster delivery.
Complete Quality Inspection Process
For a project purchase, agree the inspection and acceptance plan against the selected model, bill of materials and drawing revision. Ask which checks apply to your order, how samples are selected, what constitutes a pass and which records will be delivered before shipment. Review the applicable certificate and test-report scope separately; a general test matrix is not evidence that every configuration has passed every listed test.
How We Inspect
Raw Material Inspection
Each lot is sampled on arrival for dimensions, finish, sealing, and electrical parameters. Non-conforming lots are rejected and documented for supplier corrective actions.
In-Process Inspection
40+ checks across poles, luminaires, PV modules, and battery packs ensure critical tolerances (e.g., pole height/diameter/wall thickness), welding quality, and electrical settings meet order requirements.
Final Product Inspection
70+ appearance, specification, and performance checks—photometrics, ingress/impact, environmental and surge—must pass before packaging and warehousing.
Our Commitment to Quality is Reflected in the Details
At every stage of production, we develop and adhere to detailed and necessary inspection items to ensure quality from appearance to performance. This gives us the confidence to be your reliable partner.
Process 1 —— Raw Material Inspection
For each batch of incoming materials, we conduct a quality inspection immediately upon arrival. We randomly select at least two samples from each pallet to check dimensions, appearance, surface treatment, and other critical factors. Materials that meet our standards are accepted into inventory, while those that do not are returned to the supplier.
Process 2 —— Production Inspection
We have established 40+ specific quality inspection standards for our self-produced light poles, fixtures, solar panels, and battery components. These standards ensure that dimensions and heights are within minimal tolerances, and that appearance, welding, and other parameters meet the exact requirements of each order.
Light poles
We conduct thorough inspections to ensure flawless appearance, secure welding, and strict adherence to specifications. Pole height is accurate within ±5 cm for a 10-meter pole, diameter within ±2 cm for a 20 cm design, and wall thickness within ±0.5 mm for a 4 mm specification.
Fixtures
We inspect light fixtures for exterior damage, battery voltage, controller settings, charging/discharging, cover alignment, and overall appearance before packaging.
Solar panels
We check solar panels for cell integrity, welding quality, cracks, voltage, power, frame and junction box sealing, and overall appearance to ensure they meet order specifications.
Battery components
We sort battery cells by voltage and resistance, inspect welds, test charging/discharging for aging, and check the battery pack’s appearance and labeling for quality and compliance.
Process 3 —— Final Product Inspection
Our quality control process also includes 70+ final product inspections, covering appearance, specifications, and performance testing. Only products that fully
meet order standards are packaged and stored. For each component type, we’ve made specific quality criteria and employ random sampling to ensure the accuracy and reliability of our inspections.
Quality KPIs
Test Matrix & Standards
| Category | Test Item | Standard / Method | Pass Criteria (Typical) | Deliverables |
|---|---|---|---|---|
| Ingress & Impact | IP rating / IK impact | IEC 60529 / IEC 62262 | IP65–IP66; IK08–IK09 | Test report; photos |
| Surge & EMC | Surge immunity | IEC 61000-4-5 | 6–10 kV L-N/L-G (project-based) | Surge test sheet |
| Environmental | Salt spray corrosion | ISO 9227 / ASTM B117 | No blistering/rust within specified hours | Chamber record; photos |
| Photometric | Type I–V distribution & flux | IES LM-79 / goniophotometry | Meets project illuminance/uniformity | IES file; Dialux report |
| LED Reliability | LM-80 / TM-21 projection | IES LM-80 / TM-21 | L90 ≥ 50k h (typical projection) | Vendor LM-80; TM-21 calc |
| Battery | Cycle life @ DoD | IEC 62620 (ref.) | ≥3,000 cycles @ 80% DoD, 25 °C (typ.) | Cycle test summary |
| Poles & Coating | Hot-dip galvanizing | ISO 1461 | Zinc thickness ≥70 µm (typ.) | Coating thickness record |
| Sampling | Incoming / Final AQL | ISO 2859-1 | AQL 1.0–2.5, Inspection Level II | Sampling sheet |
Lean Manufacturing, Reliable Warranty
We manufacture key components, including light poles, luminaires, solar panels and battery packs, in our own solar street light factory. The standard warranty is five years; coverage, exclusions and remedies follow the signed terms for the quoted configuration. The company-level field-failure metric is ≤0.3%, not a guarantee for an individual order. Send your model shortlist, project requirements and required inspection documents so the quotation can identify the acceptance criteria, deliverables and warranty responsibilities.