Source a manufacturer of a product

Data to include: I need someone able to find out a manufacturer of a particular packaging product that I have not been able to source myself. The packaging product is a circular shaped plastic case for a confectionery product. I would simply need the name of a company or companies who manufacture it, the packaging already exists and is being sold by another company .
Extra notes: I need someone able to find out a manufacturer of a particular packaging product that I have not been able to source myself. The packaging product is a circular shaped plastic case for a confectionery product. I would simply need the name of a company or companies who manufacture it, the packaging already exists and is being sold by another company .