The start-up Chargeasap set up an Indiegogo campaign to fund the production of its Flash Pro and Pro Plus power banks. Its success has enabled the company to start selling the ~100W-capable accessories through its own website. They boast 25,000mAh rated capacities based on the latest graphene power-storage technology.
https://www.notebookcheck.net/Chargeasap-releases-its-latest-Flash-Pro-series-power-banks-from-crowdfunding-to-general-retail.592614.0.html