Digital Metal Detector for Huckleberry in Poland

First of all, thanks for customer in Poland offered us video in working site and offer us machine comments : "It works properly, sensitivity is very good. "  Before customer confirm order machine, in 2019, they send enquiry to more than 10 different suppliers in China to compare machines, some suppliers prices lower than ours, but after we offered professional technical advice, they finally choose us and we also offered machine as our promise and they are satisfied with this cooperation.