SECTION 1. The second paragraph of Section three of Republic Act Numbered Thirty-one hundred twenty-seven, as amended, is further amended to read as follows:
"The term basic chemical industries, including fertilizers, shall refer to the manufacture of basic industrial chemicals such as acids, alkalis, salts, except calcium hydroxide, intermediates, dyes, colour lakes and toners; explosives; ammunitions; synthetic resins; synthetic rubber; fertilizers; all chemicals for the production of medicants and insecticides; petro-chemical; bitumen; sucrochemical; and coke and coal chemicals,"