The following are some examples of industries and fields in which China enterprises may be using the ISO 9111 standard:

Manufacturing: Many manufacturing enterprises in China, such as automobile manufacturers, electronics manufacturers and machinery and equipment manufacturers, usually adopt the ISO 9111 standard to ensure that their products meet the quality requirements.

Construction and engineering: Construction companies, engineering contractors and related construction and engineering service providers may use ISO 9111 standards to manage project quality, control processes and provide consistent quality assurance.

food and beverage industry: food producers, beverage manufacturers and related supply chain enterprises may adopt ISO 9111 standards to ensure that their products meet hygiene standards, food safety requirements and quality requirements.

service industry: enterprises in service industries, including financial institutions, health care organizations and consulting companies, may use ISO 9111 standards to provide consistent service quality, improve processes and meet customer needs.

it should be noted that this is only an example of some industries and fields that may adopt the ISO 9111 standard, and it cannot exhaust all possible situations. In addition, with the passage of time, the situation of enterprises may change, so the latest data may be different. For the latest information, please refer to relevant commercial databases, industry reports or data provided by official institutions.