With more than 10 years dedication and specialty in educational instrument and solution, we have professional and experienced personnel. We focus on offering efficient and professional service to our customers at any time.

We guarantee the quality by: returning goods, exchanging goods and maintenance according to our products regulations. The after-sales services are listed as follows:

1. Question: How to clean the panel of NANHAO interactive whiteboard?
Use a piece of clean damping cloth to clean the panel lightly.
Attention: You have to wring out the damping cloth and make sure there is not any floating water, so as to prevent any water infiltrating into internal side of NANHAO interactive whiteboard.

2. Question: What to do if have written on NANHAO interactive whiteboard with an un-erasable and unctuosity color pen?
Never use unctuosity color pen writing on NANHAO interactive whiteboard! Once you have done it, clean it lightly using absorbent cotton dipped with alcohol.

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