4. Results and discussion
After studying the related research to select the multi-criteria most appropriate for choosing the best place for the warehouse, the results made it clear that the criteria are dependent upon how appropriate they are to the research objectives. With this in mind, the appropriate criteria were synthesized based on data gleaned from the entrepreneurs’ interviews. Moreover, the proper criteria were set by considering the possible choices for siting the grass warehouse in Chiang Rai. Based on the interviews the decision maker of the warehouse site selection and the evaluation of the location’s surroundings, seven criteria were used to choose the location, as they covered all of the concerns listed below.
1. Size of property (X1)
2. Property cost (X2)
3. Labor costs (X3)
4. Public utilities (X4)
5. Mode of transportation (X5)
6. Ability to access the location (X6)
7. Distance from suppliers (X7)
The basic criteria for choosing the location of the grass warehouse in Chiang Rai Province was set forth by the conjunctive constraint method. The filtering factors are as follows.
1. It must be less than 50 kilometers away from the material source because the entrepreneur does not want to be too far from the resources.
2. It must be located on main transport routes.
3. It has a main road linking the area.
Based on the initial screening with the above-constrained conditions, the choices were narrowed to four districts, including:
1. Amphoe Mae Chan (A1)
2. Amphoe Mae Sai (A2)
3. Amphoe Chiang Saen (A3)
4. Amphoe Chiang Khong (A4)