15% - 20% 5 BBL, PSL, UV, SINGER, NFS 10% - 15% 3 SCC, BROOK, AA 5% - 10% 20 TFB, TASCO, ROINET, TNS, SSC, EGCOMP, CPN, LH, CPL, AH, MATI, NMG, CTW, PATKOL, ROJANA, TUF, SUSCO, RAIMON, KWH, PA น้อยกว่า