An ink composition is provided that includes a compound represented by Formula or. In a dry gasification stage, coal is gasified to produce a synthesis gas precursor at elevated pressure comprising at least H2 and CO. The control system is used to control the pattern displayed on the display apparatus. The touch controller is operationally connected to the sensing electrode array for receiving the sensing signal and identifying the touch on the touch screen. 01 wt % to 10 wt % both inclusive may be used to prevent dishing and erosion, as well as to achieve an improved polishing rate for tantalum without any damage to tantalum. Since the 4-aminopyrimidine derivatives and the existing antimicrobial active compounds andor insecticidal active compounds are used in admixture, the 4-aminopyrimidine derivatives which are useful as pest control agents, particularly as agri-horticultural pest control agents, need be used in smaller amounts and yet their antimicrobial or insecticidal activity can be improved.