Is it permissible to sell products that contain pork in their manufacturing, if the percentage of sales from these products equals the percentage of tax imposed by the state?

It is not permissible for a Muslim to sell, buy, or use food products that contain any part of pork, because it is entirely impure and forbidden, as the Prophet, peace and blessings be upon him, said: "Indeed, when Allah prohibits the eating of something, He also prohibits its price." So, if the agency compels you to sell products containing pork, it is not permissible to work for it. As for paying taxes in non-Muslim countries for someone who entered with a covenant and trust, it is necessary as part of fulfilling the conditions. It is not permissible to sell forbidden things to avoid paying taxes.