Most buying stations sell their octopus to a single processing plant. The batch, which besides octopus often contains other seafood for export like squid, grouper and lobster, is shipped by truck, boat or plane depending on the location of the buyer. The processing plant grades the octopus again and pays the buying station. Only a small number of processing plants in the Philippines process and export octopus and for most of them it is a side product to more commonly produced products like squid, tuna, shrimp, milkfish and tilapia. These processing plants are all Filipino owned within a few cases a minority foreign shareholder. A number of factories also work together with overseas buyers in developing new product lines and ensuring quality control. In general, processing plants export the products themselves and do not make use of separate export entities. Most of the octopus is gutted, tumbled, cooked and glazed before they are frozen. Additionally, a number of different products are made including whole ball octopus, whole flower octopus and several sliced products. The technology to develop flower octopus is relatively new in the Philippines and so far only the company Bluefin Seafood Exports has advanced this product line.