High practical use:
Utility fulfilment and functional durability.
2. Sufficient safety:
Foolproof. Avert injury danger if operate.
3. Durability and validity:
In accordance with aesthetic sense and physical life span.
Adaptation of the object to the physical measurement of the user.
Technical and formal identity:
6. Environmental Relationships:
Wise integration in the surrounding of the product. Aesthetic
and economic suitable of form, colour and material.
Economic with energy and resources in produce and use, minimum
waste and maximum recycling.
8. Visual expression:
The product should inform about it's function.
9. High quality
A structural sound, unity, clear design elements, using material
for it's own merits.
10 A sensory and mental stimulant:
For the use it should arouse interest, motivation, interaction,
enjoyment and satisfaction.
("Well designed products"
Guideline from Museum of Modern Art, New York and from Unit German