Talk to the right Grandtech specialist
Send the relevant product, system and delivery details. Our team will route your inquiry and provide a practical next step.
Product sales
Pricing, availability, model selection and volume requirements.
Start an inquiry →EngineeringProject consultation
System voltage, load, battery capacity and component compatibility.
Discuss a system →Existing ordersTechnical & after-sales
Troubleshooting, warranty questions and delivery assistance.
Request support →Tell us what you need
The more detail you provide, the more accurately we can recommend products, confirm compatibility or support an existing order.
Common inquiry questions
What information is needed for system matching?
Include the installation country, AC voltage, peak and continuous loads, solar array size, battery preference and target backup time.
What should I send for technical support?
Provide the order number, model, serial number, system voltage, fault code and clear photos or video of the wiring and issue.
Can I request volume or project pricing?
Yes. Include the product models, estimated quantities, delivery location and expected purchase schedule.