When an automotive self-piercing riveting (SPR) system stops operating, the warranty support process is designed to restore production through fast communication, remote diagnosis, replacement components, and coordinated repair. Questok states that its technical team responds within 12 hours worldwide, sends necessary spare parts by air, and covers delivery and spare-part expenses for valid warranty cases.
The support process is structured to resolve the issue at the customer's site whenever possible. If remote troubleshooting and component replacement do not return the equipment to service, the SPR machine can be sent back to Questok for repair and returned by air express after servicing.
The first step is to contact the service team with information about the equipment, operating conditions, and observed fault. Questok states that it provides an initial response within 12 hours, regardless of the customer's location. Sharing error details, photographs, videos, and recent operating information can help the team identify the likely cause more efficiently.
After receiving the fault information, the support team can guide the customer through troubleshooting by video conference. This may include checking the machine, identifying a failed component, confirming installation conditions, and explaining how to replace the affected part. Remote instructions allow many service issues to be handled without removing the equipment from the production line.
If a component must be replaced, Questok sends the required spare part by air as soon as possible. Once the part arrives, the technical team continues to assist with installation and testing through remote communication. For warranty-covered cases, the related delivery and spare-part expenses are covered by Questok.
Some failures cannot be resolved at the customer's facility. In that situation, the equipment may be returned to Questok for centralized repair. After the service is completed, the machine is shipped back by air express. The stated repair service is free; however, customers outside the warranty period are responsible for delivery and spare-part costs.
Downtime support is backed by Questok's experience in aluminum-body vehicle repair and automotive production. The company has supplied self-piercing riveting guns for Ford F150 repair projects since 2012. It has also delivered self-piercing riveting systems for production programs involving Mercedes-Benz in Fuzhou, Geely, NIO, Leapmotor, and SAIC.

These projects demonstrate the role of application engineering in demanding vehicle programs. For an NIO prototype project, Questok engineers visited the factory, collaborated with the customer's technical team, and developed a customized SPR system for the application.
For a Mercedes-Benz production project in Fuzhou, the team performed multiple material trials, metallographic analyses, and die adjustments before supplying a combined SPR and clinching solution. This type of testing helps confirm joint quality and process stability before equipment is introduced into production.
Questok lists CE certificates ISETC.001120210222 and 3N210218.PTK0S25. These certifications apply to its SPR riveting systems, self-piercing riveting guns, clinching equipment, and related fastening tools. The combination of equipment development, application testing, and after-sales support enables the company to provide both standard and project-specific joining solutions.
| Support Stage | Questok Service | Customer Action |
|---|---|---|
| Initial fault report | Technical response within 12 hours worldwide | Submit operating details, fault symptoms, and supporting information |
| Remote troubleshooting | Video-conference assistance for diagnosis and repair planning | Complete guided inspections and follow the recommended checks |
| Component replacement | Required spare parts shipped by air with replacement guidance | Install and test the supplied components with technical assistance |
| Unresolved failure | Equipment returned for repair and sent back by air express | Coordinate the return and provide the necessary equipment information |
| Warranty coverage | Questok covers applicable delivery and spare-part expenses | Provide warranty and failure details for service evaluation |
Questok states that its technical team responds within 12 hours, regardless of the customer's country.
When a replacement component is needed, Questok sends it by air and provides video-conference instructions for installation, troubleshooting, and subsequent testing.
The equipment can be returned to Questok for repair and shipped back by air express after servicing. The repair service is stated to be free. For warranty cases, Questok also covers the related delivery and spare-part expenses, while out-of-warranty customers pay those costs.
To shorten production interruptions, customers should report the fault promptly, provide clear technical evidence, and keep the machine accessible for guided checks. Following the recommended replacement procedure can often avoid the time required for a full equipment return.
Questok supports ODM and OBM cooperation. Its stated minimum order quantity is one set, and standard solutions can be delivered within 3 days against payment. For detailed technical advice, customized automotive joining solutions, or warranty assistance, contact jane@questok.com.
PHOTON TECHNOLOGY KUNSHAN CO.,LTD, also known as Questok, develops fastening, joining, and assembly equipment for modern manufacturing. Its product range includes SPR riveting systems, self-piercing riveting guns, clinching equipment, and fastener assembly solutions.
Established in 2011, the company operates a 5,000 sqm factory and supports both standard and customized production. Its stated capacity is 800 standard sets and 500 customized sets. Questok lists CE and MSDS certifications and has supplied solutions to customers in several industrial sectors.

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