Covering The Skies Of The World Since 1922. Fireworks - Castle Hill, NSW . Brand: ShowFX. Specialty: Close Proximity Displays, Indoor Displays, Special Effects. Function: Community Functions, Conferences, Corporate Events, Exhibitions, Fund Raisers, Private Parties, Receptions, Sporting Events. Occasion: Birthdays, Weddings. Service Option: Free Quotes. Region: Australia. Assurance: Insured, Licensed. Hours of Operation: Open Monday - Friday