Businesses in the plastic packing goods category make, distribute or sell packaging and materials made wholly or partly from plastic. Their products may include carrier and mailing bags, refuse sacks, stretch and shrink film, bubble wrap, protective foam, food containers, trays, bottles, tubs, lids and pallet covers. Some suppliers provide packaging in standard sizes, while others offer made-to-measure items or printing for product information, branding and handling instructions. Customers can include manufacturers, retailers, food businesses, warehouses, fulfilment services and household buyers. Depending on the supplier, services may include wholesale or trade supply, help selecting suitable packaging, and the provision of dispensers or packing equipment. Products vary in thickness, strength, shape and intended use; some are designed for food contact, moisture protection, transit or storage.