Design for envelope

Looking for a designer to develop the design of an envelope.

Task: create a modern, stylish, and attractive design for an envelope for a company specializing in disinfection. The design should look professional and stand out favorably among competitors.

What will be provided:
design examples

company website for understanding style and positioning: https://dezinfector.com.ua/

Expectations:
creative approach
neat, “clean” design
relevance to the field of activity (disinfection, reliability, safety)