Inquiry about Digital Menu Power Bank

We are a Saudi Arabia-based digital signage and advertising agency launching a new DOOH advertising network in local cafes and restaurants. We are looking for a reliable, long-term manufacturing partner for digital menu power banks. We plan an initial order of 100 units, scaling to 500+ within months. We need high-quality devices with competitive pricing. Please provide your catalog and quotations based on these specifications: - 7-inch or 8-inch LCD screen, preferably non-touch for advertisement looping - Wi-Fi connectivity for cloud CMS content updates - High-capacity battery (15,000mAh–20,800mAh) for a full 12-hour shift - Built-in detachable/replaceable fast-charging cables (USB-C and Lightning) - Central charging station with Saudi standard Type-G 3-pin plug, and SASO/SABER compliance for devices