What after-sales support does Trustech provide if we encounter problems with a spinning line or spinneret?

Yes. For customers developing new membrane products or upgrading existing processes, Trustech can participate beyond the role of a conventional equipment supplier and provide joint technical development and scale-up support.

The cooperation can begin with the membrane's target specifications, material system, fiber structure, production capacity, and application requirements. Based on these inputs, Trustech's engineers can work with the customer on:

• Spinneret development – Optimize hole geometry, flow channels, and multi-bore structures according to the target membrane design.
• Process and equipment matching – Evaluate the relationship between the membrane formulation, spinning conditions, spinneret, and production-line configuration.
• Pilot testing and commissioning – Support process trials and equipment adjustment before moving toward larger-scale production.
• Scale-up support – Help translate laboratory or pilot results into a more stable industrial production process.
• Continuous optimization – Use production feedback and test results to identify opportunities for improving stability, efficiency, and membrane consistency.

This collaborative approach is particularly valuable when the customer is working with new membrane materials, specialized hollow fiber structures, medical membranes, gas-separation membranes, or other applications where the process window is relatively narrow.

Rather than asking customers to finalize every technical parameter before purchasing equipment, Trustech can work with them to gradually define the relationship between membrane design → spinneret → spinning process → equipment → production performance.

For customers with long-term R&D plans, this provides a practical path from laboratory concept to pilot validation and eventually industrial-scale production.

Yes. Trustech can provide technical documentation and training materials required for equipment installation, operation, maintenance, and project acceptance, subject to the specific project and documentation requirements.

Depending on the equipment or spinneret supplied, documentation may include:

• Technical specifications and configuration information
• Installation drawings and relevant engineering documents
• Spinneret inspection or dimensional reports
• Equipment operation and maintenance manuals
• Process and commissioning references where applicable
• Inspection and acceptance records
• Technical training for installation, operation, maintenance, and troubleshooting

For equipment projects, Trustech can provide technical guidance during commissioning and help the customer's engineering team understand key operating and maintenance requirements. Training can be conducted remotely or on site depending on project needs.

These documents also provide a useful technical basis for customers conducting internal supplier reviews, equipment acceptance, production qualification, or external certification activities.

Because documentation requirements vary between industries and projects, customers are encouraged to communicate their audit or certification requirements during the quotation stage so that the required documentation can be confirmed in advance.

Trustech manages quality through a combination of ISO 9001 quality management, process control, precision inspection, and product traceability.

Quality control begins with incoming materials and continues throughout machining, assembly, inspection, and final delivery. Key manufacturing processes are monitored to ensure that critical dimensions and performance requirements remain within the specified range before products are released.

For spinnerets, particular attention is given to precision parameters such as micro-hole dimensions, concentricity, and eccentricity, supported by dedicated microscopic and image-based inspection methods. Equipment is also inspected and tested according to its configuration and project requirements.

Traceability is an important part of this system. Production and inspection information is recorded throughout the manufacturing process, allowing relevant product or batch information to be reviewed when necessary.

For customers, this means that quality is not based solely on final inspection. It is supported by a controlled manufacturing process that makes potential deviations easier to identify, analyze, and correct.

Different membrane applications place different demands on fiber geometry, flow distribution, material compatibility, process stability, and production efficiency. Trustech therefore does not apply one standard spinneret or spinning configuration to every application.

For water purification and liquid separation, including MF, UF, NF, MBR, and desalination, the focus is generally on stable continuous production, suitable flux, consistent fiber geometry, and scalable output. Trustech provides spinnerets with concentricity of around 0.003 mm for separation-membrane applications, together with NIPS/TIPS spinning solutions for different production requirements.

For hemodialysis and other medical membranes, tighter control of surface quality, dimensional accuracy, eccentricity, and fiber consistency becomes particularly important. Trustech's application portfolio includes dedicated spinnerets for hemodialysis and artificial-kidney membranes, with reported eccentricity reaching approximately 0.003 mm.

For gas separation and artificial-lung applications, spinneret design needs to support precise and consistent formation of specialized hollow fibers. Trustech provides polymer-fiber spinning spinnerets for gas-separation applications, with reported concentricity reaching approximately 0.0003 mm for relevant products.

For RO flat-sheet membrane production, the focus shifts from hollow-fiber geometry to coating and casting consistency. Trustech's flat-sheet systems are designed around continuous casting/coating processes and can integrate systems for heating, mixing, web handling, winding, and process control.

The key advantage is that customers can evaluate the membrane material, structure, process route, production capacity, and equipment configuration together, rather than selecting a spinneret or machine in isolation.

Trustech has developed dedicated micro-deep-hole manufacturing and precision machining capabilities for polymer fiber spinnerets. Its manufacturing processes can achieve step-diameter concentricity of approximately 0.002 mm, with hole concentricity reaching around 0.005 mm under the corresponding process conditions. Automated processing and precision fixtures are also used to maintain consistency between different machining operations.

Inspection is equally important. Trustech combines microscopic and image-based inspection with its Microtech Image Test software to evaluate critical parameters such as micro-hole dimensions, concentricity, and eccentricity.

For customers, the value is not simply achieving high precision on one prototype. The combination of precision machining + dedicated inspection + process control helps establish a repeatable manufacturing process for subsequent batches.

This is particularly important for applications such as hemodialysis, gas separation, and high-performance water-treatment membranes, where consistency between holes and between production batches can directly affect membrane performance.

If you have a required hole diameter, concentricity, or multi-bore structure, send us your specifications and we can evaluate the appropriate manufacturing approach.

For a technical equipment supplier, qualifications and industry recognition are more than certificates on the wall. They provide customers with an additional reference for evaluating a supplier's technical capability, quality management, industry experience, and long-term reliability.

Trustech is recognized as a National High-Tech Enterprise and a China Technology-Based SME, and is a member of the China Membrane Industry Association. The company also holds an AAA credit rating and has obtained more than 40 authorized patents and other intellectual property rights related to membrane spinning and spinneret technologies.

Trustech also participated in the development of the group standard “Hollow Fiber Membrane Spinneret” (T/SHDSGY 058-2022). In addition, its technologies have been recognized as being at a domestic leading level through technology appraisal/search activities.

For customers, these qualifications provide useful evidence that Trustech is not simply a trading company supplying standard components, but an R&D-driven manufacturer with established capabilities in precision manufacturing, membrane spinning technology, and continuous product development.

When evaluating suppliers for a long-term membrane production project, customers can therefore consider not only the quotation, but also the supplier's technical credentials, quality system, intellectual property, industry participation, and track record.