Debentures as at 31 December 2018 and 2017, which are unsubordinated, unsecured debentures with registered name, were summarised below.

        Consolidated and separate financial statements
        Unit Amount
Name of debenture Fixed interest rate Period Maturity date 2018 2017 2018 2017
        (Thousand units) (Thousand units) (Million Baht) (Million Baht)
AP181A 4.24% p.a. 5 years 24 January 2018 - 1,250 - 1,250
AP188A 4.13% p.a. 5 years and 3 months             9 August 2018 1,250 1,250 1,250 1,250
AP191A 4.50% p.a. 5 years 24 January 2019 350 350 350 350
AP197A 4.36% p.a. 5 years and 1 month 27 July 2019 1,000 1,000 1,000 1,000
AP201A 3.58% p.a. 5 years 22 January 2020 1,500 1,500 1,500 1,500
AP187A 2.65% p.a. 3 years and 1 month          18 July 2018 300 300 300 300
AP181B 2.30% p.a. 2 years and 6 months 10 January 2018 - 500 - 500
AP197B 3.04% p.a. 4 years 10 July 2019 1,000 1,000 1,000 1,000
AP191B 2.15% p.a. 2 years and 6 months 29 January 2019    1,000    1,000    1,000    1,000
AP191C 2.55% p.a. 2 years 19 January 2019 500 500 500 500
AP207A 3.06% p.a. 3 years and 6 months 19 July 2020 1,500 1,500 1,500 1,500
AP203A 2.50% p.a. 2 years and 10 months 30 March 2020 500 500 500 500
AP212A 2.50% p.a. 3 years and 6 months 15 February 2021    1,000    1,000    1,000    1,000
AP214A 2.35% p.a. 3 years and 6 months 19 April 2021 1,000 1,000 1,000 1,000
AP217A 2.32% p.a. 3 years and 6 months 22 July 2021 1,500 - 1,500 -
AP221A 2.40% p.a. 4 years 22 January 2022 1,500 - 1,500 -
AP222A 2.81 % p.a. 3 years and 6 months 7 February 2022 500 - 500 -
AP228A 2.94% p.a. 4 years 7 August 2022 1,500 - 1,500 -
AP228B 2.94% p.a. 4 years 24 August 2022 500 - 500 -
AP218A 2.60% p.a. 2 years, 11 months and 24 days 17 August 2021 100 - 100 -
AP20DA 2.78% p.a. 2 years 25 December 2020 1,000 - 1,000 -
AP21DA 3.13% p.a. 3 years 25 December 2021 1,000 - 1,000 -
Total 16,950 12,650
Less: Current portion (3,850) (3,300)
Debentures - net of current portion 13,100 9,350