K7 Combo Plotter,Sounder,AIS

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G'day all,I'm considering purchasing this Chinese made combination plotter/sounder/AIS and would appreciate any feedback from fellow cruisers who have used or have knowledge of said item

[Pendragon35]

Can you provide a link to this?

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The HUAYANG TECHNOLOGY COMPANY in Hong Kong supply the K7 Combo, website is www.Huang-tech.com.I googled plotter/sounder/AIS and the trail led to them, I'm interested in hearing from.people who have used them.