Tiếng Việt 
English CHAU HOANG LONG COMPREHENSIVE INDUSTRIAL TECHNICAL SERVICES
In the era of manufacturing and processing industries striving for rigorous international standards such as ISO, HACCP, GMP, and export requirements, the stability of contaminant detection systems, measurement equipment, and laboratory analysis systems is a critical prerequisite for every factory.
Chau Hoang Long Technical Service Trading Co., Ltd. accompanies businesses as a strategic technical partner, taking responsibility for optimizing operational efficiency and guaranteeing the absolute accuracy of all quality control processes.
1. Multi-brand
Overcoming the barriers of component exclusivity and support limitations from genuine OEMs, Chau Hoang Long's experienced engineering team possesses the capability to perform deep technical interventions into the hardware structures and algorithms of numerous globally renowned brands, including Anritsu, Square, Sesotec, Fortress, and Nikka.
2. Optimize costs by 70%–80%
Prioritizing the approach of isolating, troubleshooting microcircuits, and directly repairing faulty components on the control board rather than recommending expensive full-module replacements. This solution helps manufacturers maximize savings on their operational budgets while still ensuring optimal machine performance.
3. Same-Day Emergency Processing
Every hour of production line stoppage carries severe financial losses. Chau Hoang Long has developed an agile response workflow, standing ready to dispatch engineers directly to the factory floor to diagnose and resolve issues on the very same day, minimizing downtime to the absolute minimum.
Core Technical Services Ecosystem
1. Repair & Functional Restoration of Contaminant Detectors & X-Ray Systems
Thoroughly resolving issues such as probe demagnetization, faulty transceiver sensor coils, power supply board failures, control system firmware conflicts, and environmental wave interference across industrial metal detectors and X-ray inspection machines.
2. Periodic Maintenance & Calibration for Export Quality Standards
Comprehensive industrial cleaning of probes, mechanical alignment of conveyor systems, and optimal scan frequency calibration using standard test pieces (Fe, Non-Fe, SUS). Providing clear calibration reports to fully support legal procedures for ISO, HACCP, and GMP audits.
3. Maintenance & Repair of Laboratory & Biomedical Equipment
In-depth maintenance of temperature control systems for Memmert ovens, incubators, and water baths; calibration of load cells and mechanical mechanisms for KETT moisture analyzers; and repair of optical-mechanical systems for UV-Vis spectrophotometers, biochemistry analyzers, and urine analyzers.
4. Inspection Equipment Rental & Certified Pre-Owned Supply
Optimizing operational cash flow (OPEX) through short-term or long-term rental services for conveyorized metal detectors, apparel needle detectors, and X-ray luggage scanners. Supplying high-quality pre-owned machines that have been thoroughly overhauled and certified by our engineers, backed by long-term warranties.
Technical Transparency - Equipment Fault Reference
| Equipment Fault Symptoms | Root Technical Causes | Recommended Corrective Actions |
|---|---|---|
| Fails to detect metal-containing products | Probe demagnetization, faulty transceiver sensor coil inside the probe. | Measuring coil parameters, rewinding the sensor coil, or replacing with a compatible new probe. |
| Control system freezes, no response to operations | System software conflicts or faulty microprocessor on the main control board. | Repairing mainboard hardware, reflashing standard manufacturer firmware. |
| Control display goes completely black | Power supply unit (PSU) fault, broken display signal transmission cable. | Inspecting the power system, replacing burned power chips, or installing a new signal cable. |
| System constantly triggers false alarms (frequent false positives) | Misaligned phase balance parameters, environmental wave interference, or conveyor belt misalignment. | Re-aligning the mechanical conveyor system, resetting anti-interference scan frequencies. |
