  The recent emergence of large language models (LLMs) demonstrates the
potential for artificial general intelligence, revealing new opportunities in
Industry 4.0 and smart manufacturing. However, a notable gap exists in applying
these LLMs in industry, primarily due to their training on general knowledge
rather than domain-specific knowledge. Such specialized domain knowledge is
vital for effectively addressing the complex needs of industrial applications.
To bridge this gap, this paper proposes a unified industrial large knowledge
model (ILKM) framework, emphasizing its potential to revolutionize future
industries. In addition, ILKMs and LLMs are compared from eight perspectives.
Finally, the "6S Principle" is proposed as the guideline for ILKM development,
and several potential opportunities are highlighted for ILKM deployment in
Industry 4.0 and smart manufacturing.
