definitions
| practical | useful with little decoration | 日常の,実際の,飾りの無い |
| economical | costs less to run | 効率的な |
| attractive | beautiful | 魅力的な |
| functional | useful | 機能的な |
| stylish | fashionable and good to look at | 上品な、洗練された |
| user-friendly | easy to use | 利用者にとって簡単に使える |
| well-designed | planned and made well | うまく設計された |
| compact | small | 携帯可能な |
- Flow chart for the development
- have the original idea
- do make the research
- design the product
- do product trials
- brand the product
- launch the product