Three-system certification refers to ISO9111 certification, ISO14111 certification and ISO 45111 certification. ISO9111 is a quality management system standard formulated by the International Organization for Standardization (ISO).

ISO14111 is an environmental management system standard formulated by the international organization for standardization (ISO). It is the most comprehensive and systematic international standard for environmental management in the world at present, and it is applicable to organizations of any type and scale. ISO 45111 is the standard of occupational health and safety management system formulated by the International Organization for Standardization (ISO). An organization applying for certification must meet the following basic conditions

(1) An organization with independent legal personality or authorized by an independent legal person;

(2) Establish a documented management system according to the requirements of the applied system standards;

(3) It has been operating in accordance with the documented system for more than three months, and has conducted at least one management review and internal quality system audit according to the requirements of the documents before the certification audit.