Operation & maintenance services
NTS focuses on the warranty and maintenance of products and services after sales. This is not only a post-sale commitment but also a long-term strategy to accompany customers. After installation, all equipment and materials are periodically inspected, repaired or replaced promptly if there are technical errors within the committed period.

Service Overview
At NTS, warranty and maintenance is not just a responsibility but a core part of our long-term customer care strategy. We understand that a system or product delivered to customers is only truly effective when it is operated stably and maintained properly. Therefore, all products, systems and equipment after handover will be included in the periodic monitoring program. Warranty and maintenance activities include: checking operational status, system adjustment, equipment cleaning and servicing, detecting and handling abnormal signs. During the commitment period, NTS will promptly repair and maintain the system if technical errors arise from the supplier or contractor to ensure stable customer operations.
Customer issues
Many customers encounter equipment deterioration, reduced performance, and unexpected problem in their wastewater treatment systems, water supply systems, or automatic irrigation systems. That can easily lead to blockages, leaks, component damage, or deviations parameters.
Suitable Object
Operation & maintenance services for wastewater treatment systems, water supply, water reuse or automatic irrigation in industrial parks, resorts, commercial centers, public works, hospitals - medical facilities, airports, restaurant owners, hotels, cafes, production, business,...
Key Benefits
Helps the handed-over system maintain stable operation, minimize technical problems, and prolong the life of the equipment. As a result, customers can focus on core operations without being interrupted by technical problems, while saving repair costs and improving operational efficiency.
Implementation process
Scheduling according to plan
Each project after being handed over needs to have a maintenance schedule, periodic maintenance or as required. NTS ensures that it takes place according to the plan committed to the customer.
Implement warranty and maintenance
According to schedule, NTS checks, evaluates the current status, cleans, adjusts parameters, replaces components or repairs within the warranty scope.
Handover after warranty and maintenance
After ensuring the system is operating well and stably, then accept and hand over the system to the customer, completing the warranty and maintenance process.
Highlights
Why choose our service?
- Clear and scheduled periodic inspections
- Standardized and professional processes
- Planned, careful, and flexible maintenance
- Commitment to stable operation
- Quick response in case of issues
Professional team
- Practical experience
- Strong expertise
- Good technical mindset
- Dedicated and professional
- Regularly updated technical knowledge
Exclusive technology
NTS has a team of professional and experienced construction workers. This is considered one of the company's exclusive advantages. Not only do they master technical skills, but they also handle on-site issues flexibly, ensuring that warranty and maintenance stays on schedule, and high quality.
Certifications & Guarantees
The team is always ready to support 24/7, ensuring problems are responded to quickly. All equipment used in the system is genuine, with clear origin and certifications such as ISO, CE,... Each project is inspected before handover, with an acceptance report to ensure the system operates reliably.
What our customers say about us
Frequently Asked Questions
How long is the system warranted?
Depending on the type of system and contract, the warranty period is usually from 12 to 24 months.
How often is the periodic warranty maintenance?
Usually every 3-6 months, depending on the operating frequency and conditions of each project.
How is maintenance cost calculated after the warranty period?
Depending on each project, NTS will survey and quote in detail for each specific case.
Does NTS keep maintenance records for long-term tracking?
Yes. Each maintenance is recorded and kept on file to track history and evaluate system performance.
During the warranty period, if equipment is damaged due to user error, will it be replaced free of charge?
No. User-caused errors beyond the technical scope will not be covered by free warranty, but NTS still supports repairs at reasonable costs.