(1) In addition, it's important to consider the perishability of products.

(2) Due to characteristics of perishability, low heat value and high organic matter content etc, organic wastes can not be easily disposed by sanitary landfill and incineration.

(3) It does not mean perishability of public ownership even though privatization has been a world trend.

(4) The model considers the impact of the perishability as part of the overall distribution costs and a heuristic approach, based on the tabu search is used to solve the problem.

(5) The high quality service is depends on the design and management, but the service design is sophisticated than product design because intangibility, inseparability, variability, perishability.

(6) As a service product, tourism product has three features: intangibility, perishability, and inseparability.

(7) Because of characteristics of the service industry such as intangibility , inseparability, variability, and perishability, it makes service provider to face highly uncertain.