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After-Sales Service

Dear Valued Customer,

Firstly, we would like to thank you for choosing our products and services. If you require after-sales service, please fill out the form below. If the form doesn't sufficiently describe your needs, please email us at ntfan@dartrich.com with "After-sales Service" as the subject. We will resolve any issues you encounter during the use of our products as soon as possible. Thank you for your support and trust!

Installation guidance
Debugging guidance
Equipment acceptance
Equipment usage consultation
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