A ratio pack is referring to a pack containing multiple sizes under a single style-color. This is sometimes referred to as a multiple-SKU pack. E.g. for apparel a product comes in Black and White and 3 sizes: Small, Medium, and Large. A carton may have the ratio for 48 pcs:

Protecting the Quality of Chinese imports
China is known as the largest manufacturer in the world. The Asian superpower produces billions worth of products every year, accounting for almost a third of global production. Western companies ...