Sunlu AMS Heater Handle Multicolor

It seems the best way to attach this is to use 3M VHB Tape.  Make sure all surfaces have been cleaned with Isopropyl Alcohol to allow for best adhesion.
Make sure the lip at the bottom is engaged with the door before pushing the handle onto the lid.  
This lip helps make sure the handle is supported and to help prevent it from failing.
Make sure to put the VHB Tape at the top of the handle.  Do Not Put towards the lip at the bottom.

There are different ways to print this:

1. Recommended Method: You can print in it's orientation provided and use normal/tree supports.  This will save a lot on filament changes.
   

2. You can set the model up straight, but this will cause a lot more filament changes and be more prone to failing.

There is also multiple versions with or without logos.

For Multicolor, the models were designed with multiple "Pieces".  You can break them into Pieces to make them a lot easier to paint in your slicer.  If you are not sure how to do this, there are plenty of Youtube videos which will make it much easier to learn than me trying to explain here.

Good Luck with the print!