Model Confirmation Letter: 4D-Escape Duo & 4D-Vanguard Duo

Model Difference

This document serves as a Model Confirmation Letter from XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO.,LTD., certifying the similarity between different models. Specifically, it confirms that the Model No.EC-8638A, known as the 4D-Escape Duo, and the Model No.EC-8639B, referred to as the 4D-Vanguard Duo, undergo the same rigorous testing procedures.

The core assertion of this letter is that despite having different model names, the electrical circuit design, layout, components, and internal wiring of both models are identical. This means that the underlying functionality and performance characteristics of the 4D-Escape Duo and the 4D-Vanguard Duo are essentially the same. The only distinguishing factor between the two models is their designated name.

This certification provides assurance that the 4D-Vanguard Duo is built upon the same reliable foundation as the 4D-Escape Duo, ensuring consistent quality and performance across both product lines.


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tags: ["EC-8638A", "4D-Escape Duo", "EC-8639B", "4D-Vanguard Duo"]
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This document serves as a Model Confirmation Letter from XIAMEN COMFORT SCIENCE & TECHNOLOGY GROUP CO.,LTD., certifying the similarity between different models. Specifically, it confirms that the Model No.EC-8638A, known as the 4D-Escape Duo, and the Model No.EC-8639B, referred to as the 4D-Vanguard Duo, undergo the same rigorous testing procedures.

The core assertion of this letter is that despite having different model names, the electrical circuit design, layout, components, and internal wiring of both models are identical. This means that the underlying functionality and performance characteristics of the 4D-Escape Duo and the 4D-Vanguard Duo are essentially the same. The only distinguishing factor between the two models is their designated name.

This certification provides assurance that the 4D-Vanguard Duo is built upon the same reliable foundation as the 4D-Escape Duo, ensuring consistent quality and performance across both product lines.

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