IEIT Systems is a Chinese information technology company established in 1999. It provides the IT infrastructure products, solutions, and services, innovative IT products and solutions across cloud computing, big data, and artificial intelligence.

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LLMs

See a usage example. 
from langchain_community.llms.yuan2 import Yuan2

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Chat models

See the installation instructions. Yuan2.0 provided an OpenAI compatible API, and ChatYuan2 is integrated into langchain by using OpenAI client. Therefore, ensure the openai package is installed. 
pip install openai
See a usage example. 
from langchain_community.chat_models import ChatYuan2