Product Quality & Certification

This page provides detailed information on our quality management, factory inspections, calibration processes, and available certifications and test reports, helping customers make informed decisions before purchasing. 

Q1: What quality management systems does your company have? Have you passed ISO certification?  

A: Our production and quality control processes are established in accordance with ISO9001:2015. All products must undergo incoming material inspection, in-process inspection, and final inspection before leaving the factory. 

Q2: What specific tests are conducted before shipment?  

A: Each device/sensor undergoes: visual inspection, electrical safety checks, functional testing, zero-point and full-scale calibration, aging tests (typically 24–72 hours of continuous operation), and pre-shipment packaging checks. We can provide test reports and test videos (upon request). 

Q3: Do you provide calibration certificates?  

A: Yes. Standard products come with factory calibration certificates; if customers require third-party calibration (e.g., from national metrology institutes or designated labs), we can assist in arranging it and provide the corresponding certificates (additional fees apply, with timelines depending on the third-party institution). 

Q4: What are the typical accuracy and drift levels for your sensors?  

A: Accuracy varies by model: for example, soil moisture sensors typically achieve ±1–3% (model-dependent), and temperature sensors commonly ±0.1–0.5 ℃. We clearly specify these in the product technical parameters and provide long-term drift test data to ensure stability under normal operating conditions. 

Q5: What international certifications do your products have?  

A: Standard certifications include CE (EU) and IP rating test reports; for certain wireless products, we can provide FCC or ETSI compliance documents (upon request). We can also assist customers in completing special certification processes for target markets. 

Q6: How do you prove product reliability in extreme environments?  

A: We conduct temperature cycling tests, damp heat tests, salt spray/corrosion tests, and waterproof/dustproof (IP) tests. For projects with particularly high environmental requirements (e.g., coastal/chemical areas/extreme cold regions), we can provide corresponding test reports or perform targeted reinforcement treatments. 

Q7: What is the product lifespan and availability of spare parts?  

A: Sensors are designed for a lifespan of 3–10 years (depending on product type and usage environment). We commit to at least 5 years of spare parts and accessory supply; during product upgrades, we strive to maintain interface compatibility or offer hardware replacement solutions. 

Q8: Can you provide test data or third-party inspection reports for samples?  

A: We can provide factory test data and internal test reports; if third-party testing is required (e.g., SGS, TÜV, or national labs), we support and assist in arranging it (fees and timelines to be calculated separately). 

Q9: How does your manufacturing process prevent failure rates (FPY, MTBF)?  

A: We select industrial-grade supply chains for key electronic components and sensor chips, and implement first-article inspection, in-process patrols, and final sampling on the production line. We track key metrics (e.g., first-pass yield, rework rate, MTBF) and investigate and improve any anomalies. 

Q10: Can you provide reliability/lifespan curves or drift curves?  

A: For key products, we can provide accelerated aging test data and drift-over-time curves to help customers assess long-term maintenance frequency and calibration plans. 

Q11: Can you provide product photos, test videos, or batch reports before shipment?  

A: Yes. For bulk orders, we can provide finished product photos, packing videos, functional test videos, and batch test reports for customer acceptance records or internal audits. 

Q12: How do you handle quality complaints and improvements?  

A: We have a standard RMA (return/repair) process. Upon receiving a complaint, we respond within 24 hours, complete preliminary technical analysis within 72 hours, and provide solutions (repair, replacement, refund, or on-site support). Quality issues are entered into an improvement process to prevent recurrence. 

Q13: Are there customer case studies or third-party user reviews that prove product quality?  

A: We can provide real customer case studies and testimonials on our website/materials to serve as references for potential users.