Giriraj Foils Pvt. Ltd. Offers Hot Stamping Foils. Giriraj Foils Pvt. Ltd. Is an ISO 9001:2000 DNY certified company. The company manufactures a broad range of specialty coated films and foils for holograms. The Hot Stamping Foils is used in many ways and in various products that adds a glittering effect to the product. Hot stamping is a method wherein a heated die is used to melt a release layer in a special foil.