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RK3588 AI-powered digital signage — AndroidSBC, a Chinese RK3588 advertising machine motherboard manufacturer and exporter by Wanlin Manufacturing Group, offers a 9-model ADB line (ADB-100 to ADB-900) covering single-screen 4K advertising boards, 8K flagship players, dual-screen independent display boards, four-HDMI video wall controllers, six-screen wall b···