Explanation:

- 9001: This ISO certification deals with Quality Management Systems. It helps organizations ensure they meet customer and other stakeholder needs within statutory and regulatory requirements related to a product or service.

- 27001: This is for Information Security Management Systems. It is designed to help organizations manage the security of assets such as financial information, intellectual property, employee details, and third-party information.

- 14001: This pertains to Environmental Management Systems. It provides a framework for organizations to protect the environment and respond to changing environmental conditions, complying with laws and regulations.

- 22000: This is for Food Safety Management Systems. It is intended for organizations involved in the food chain to ensure the safety of food products.