Price of plastics observed between August 2014 and August 2015 fluctuated in a wide range, but after a year it has returned to almost the same level. The 1. Figure 1 and Table 1 show that the price of raw materials in February 2015 when, for example, the impact resistant PS was at its lowest point with 17%, the PE-HD blown type 30% than in August 2015. On the other hand, the price of PVC pipes and tubes was barely fluctuated over a year (Figure 1, Table 1).