All right! I formulate a nice explanation in the appropriate style, as you want it – easily understandable, with icons and 2 Images of deformed 3D Printing-Parts.
Here is my suggestion:

Respect for: 3D-printed plastic parts! ♥️?

Ours 3D-printed products are made of high-quality plastics – but please note, that they are sensitive to Heat and direct solar radiation can react!

❗ Why?

• Plastic parts can be deformation, softening or even melting, if they: longer period 60 °Care suspended.
• Direct Sun (e.g. in the car or on the windowsill) can easily temperatures of over 60 °C achievement!

The melting points of our materials

? PLA (Polylactide)
→ Glass transition temperature: ~ 55–65 °C
→ Will already be in Solar heat soft!

? PETG (Polyethylene terephthalate glycol)
→ Glass transition temperature: ~ 70–80 °C
→ A little more heat resistant, but sun can also be critical here.

? ABS (Acrylonitrile-butadiene-styrene)
→ Glass transition temperature: ~ 100–110 °C
→ Better suited for higher temperatures, but direct heat remains a risk!

Possible consequences?

• Deformation
• Material cracks
• Loss of stability
• Complete melting or gluing

Guarantee Notice?

In Disregard of these instructions (e.g. storage in extreme heat)) we do not assume any guarantee for damage to the products.

Examples: This is what it looks like?

Before the Heat	After the heat

(Example images of deformed 3D-Printing)