Source PCBA for V Mount Battery Adapters

I am looking for an experienced electronics sourcing specialist, preferably based in China, to help me locate an existing PCBA used in V-Mount or Mini V-Mount battery plates/adapters. I am not looking for a completely new PCB design from scratch. My goal is to find an existing solution that can be purchased in small quantities and, if necessary, slightly modified for my application. Required PCBA Features The PCBA should ideally include: • 14.4V / 14.8V V-Mount battery input • At least 2–3 D-Tap outputs (battery voltage pass-through) • 2 × USB-C PD outputs • 5V output (optional) • 8V output (optional) • 12V output (optional) • Display screen showing battery voltage • Ideally the display would also show USB-C PD output voltage and/or power information when in use Project Requirements Identify existing PCBA solutions currently used in V-Mount battery plates, battery adapters, or power distribution systems. Contact manufacturers and suppliers in China to determine availability, specifications, pricing, and MOQ. Help source a small production quantity of approximately 10–20 units. Assist in finding a supplier or engineering service capable of making minor modifications to the PCBA. Required Modification The main modification I require is: • Relocating the D-Tap connectors from the PCB and reconnecting them via wires. • Relocating the display screen from the PCB and reconnecting it via wires. • Any other minor modifications necessary to integrate the board into a custom enclosure. Preferred Qualifications • Experience sourcing electronic assemblies and PCBAs. • Familiarity with V-Mount batteries, camera power systems, or broadcast/cinema equipment. • Ability to communicate directly with Chinese manufacturers. • Experience coordinating small PCB modifications or customizations. Deliverables • List of suitable PCBAs and suppliers. • Technical specifications. • MOQ and pricing information. • Recommendations for modification services. • Assistance arranging purchase of 10–20 units. When applying, please describe any experience sourcing camera power products, battery systems, or PCBAs in China.