data:extend(
  {
    {
      type = "tips-and-tricks-item-category",
      name = "angels-petrochem",
      order = "c-b[petrochem]"
    },

    {
      type = "tips-and-tricks-item",
      name = "angels-petrochem",

      is_title = true,
      tag = "[item=angels-void]",
      localised_name = {"tips-and-tricks-name.angels-petrochem"},
      localised_description = require "prototypes.tips-and-tricks.1-petrochem.1-petrochem-description",
      
      category = "angels-petrochem",
      order = "b",
      indent = 0,

      starting_status = "locked",
      dependencies = nil,
      trigger =
      {
        type = "time-elapsed",
        ticks = 10 * 60
      },

      --simulation = require "prototypes.tips-and-tricks.1-petrochem.1-petrochem-simulation",
    }
  }
)