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Contact Us
- Contact: Layla
- Telephone: +86 135 9032 9742
- WhatsApp: +86 135 9032 9742
- E-mail:layla@rainbowdo.com
- No. 2, Dongwangyang Industry, Huangtian Community, Hangcheng Street, Bao'an District, Shenzhen, Guangdong, China
Warranty Terms
Q: What is the standard warranty period for your red light therapy products? Do you offer extended warranties?
A: Our standard warranty period is 12 months from the date of delivery. Extended warranty programs are available for long-term business partners or large-volume projects.
Defect Resolution
Q: How do you handle defective products after shipment? Do you provide replacement or repair services?
A: If any defects are identified, we provide replacement parts, repair solutions, or product replacement depending on the issue. For verified cases, the typical resolution turnaround time is 3–5 working days, with priority handling for urgent situations.
Technical Support
Q: Do you provide technical and training support?
A: Yes. We offer remote technical assistance, including installation guidance, troubleshooting support, product usage training, and maintenance instructions. Training can be provided via video tutorials, PDF manuals, online meetings, or live demonstration sessions.
Spare Parts Availability
Q: Are spare parts readily available?
A: Yes. We maintain component and spare parts inventory for all standard and OEM/ODM products. Typical delivery time is 3–7 working days, depending on region and logistics arrangement.
After-Sales Communication
Q: What communication channels are available, and how fast do you respond?
A: Support is available through Email, WhatsApp, Phone, Video Call, and WeChat (optional).
We respond to all inquiries within 24 hours on business days.
Product Recall & Safety Issues
Q: How do you manage product safety concerns or recalls?
A: We follow a strict traceability and risk management protocol. In the rare case of a safety issue, we conduct root cause analysis, notify partners immediately, and issue corrective actions, technical updates, or recall logistics when required, ensuring client and user protection.
Performance Guarantees
Q: Do you guarantee device performance or efficacy?
A: We ensure all devices meet documented optical output, wavelength accuracy, and usage safety standards. For new or customized products, performance specifications are verified and confirmed during sample testing and approval before mass production.
Maintenance Guidance
Q: Do you provide maintenance instructions?
A: Yes. We provide detailed maintenance guides to ensure product longevity and compliance, including cleaning procedures, usage intervals, storage recommendations, and periodic inspection instructions.
After-Sales Documentation
Q: Can you supply manuals, certificates, or supporting documents for resale or regulatory use?
A: Yes. We provide user manuals, compliance certificates, risk assessment files, QC reports, and marketing usage guidelines as needed.
Custom Support for OEM/ODM
Q: Do you offer post-sale adjustments for customized products?
A: Yes. For OEM/ODM orders, we support post-sale firmware adjustments, hardware refinements, and accessory updates based on ongoing market feedback or performance needs.
