And the cost of the watduklum that have not fixed before the update cost include 131, 745.57 baht to make adjustments to the cost reduction is equal to the reduced cost 396.28 baht on average, both groups think is 75.66%
The cost of materials and the demand is not constant. And improved total cost 131,745.57 baht when renovating a reduced cost is equal to 396.28 baht cost reduction by the group was 75.66%.
And the cost of materials the demand is not constant. Before the renovation cost, including 131 745.57 baht. When the cost that reduced equals 396.28 baht. The cost decreased by an average of both groups were 75.66%.