双欣环保:公司产品DMC、DEC、EMC是锂电池电解液的重要原材料之一
Group 1 - The core viewpoint of the article is that the company, 双欣环保, is involved in the lithium battery industry, specifically in the production of important raw materials for lithium battery electrolytes [2] Group 2 - The company's products, including DMC, DEC, and EMC, are identified as key raw materials for lithium battery electrolytes [2]