I've been using Vintar for the past 1.5 years. It has 3 USB C ports and 1 USB A 3.0. Fast charging.
Tested in Asia, Europe and North America The N. America test was done recently when I left my laptop charger (USB C) in the office.
My office is 2 hours away from home so there was no way I was going to get it. I've tried couple of other travel adapters but they didn't have enough juice to power up my laptop. Tried this one as a last resort and I saw that one of the USB C ports have a laptop icon. Yeap, it worked and I was able to continue working on my laptop for the next few days until I returned to the office. When I bought it, the price was around $60. Now I see on amazon for $39 - highly recommended.