million or 17.37% from the same period of previous year. This was due to decrease in the delivery of pre-stressed concrete piles and post-tensioned. However, the delivery of glass-fiber reinforced concrete

of pre-stressed concrete piles and post- tensioned. However, the delivery of glass-fiber reinforced concrete, precast concrete, special cement and architecture was increased. (2) Other incomes The

13.58% from the same period of previous year. This was due to decrease in the delivery of pre-stressed concrete piles, post-tensioned and special cement which was Baht 101.24 million. However, the

delivery volume of pre-stressed concrete piles, fiberglass reinforced concrete and post-tensioned. (2) Cost of sales In 2017, the Company and its subsidiaries had total cost of sales at the amount of Baht

- stressed concrete piles, precast concrete, glass- fiber reinforced concrete and special cement which were Baht 169. 47 million. However, the delivery of post- tensioned was decreased by Baht 33. 48 million