Yes, all of our products are certified and have the appropriate markings.
USB Power Delivery (PD) is a universal charging standard that enables compatible devices to charge at much higher power than normal. The technology supports bi-directional charging and data transfer from both host and peripheral. Fast charge your Pixel 3 or iPhone, and then use the same charger to power your MacBook. Get more detailed information from this blog post.
It is normal for a little heat to be emitted from the product, but it shouldn't be too hot to handle. In this case, please stop using the product and contact our support channel for more help.