This national regulation will be succeeded by a technical regulation of the Customs Union, which is currently under the discussion within the countries, and should be approved by all three countries. Currently, most supermarkets in Kazakhstan sell milk on a commission basis and expect the dairy plant to send one of its own workers to pack the products in coolers, monitor expiry dates, and keep displays organised and clean. This section is based on interviews carried out in January and March 2012 for this Review. Usually the plant has individual-work contracts with farmers who have more than fifty head of cattle for milk supply.