兴业股份：公司主营产品为铸造用树脂及固化剂、特种酚醛树脂等

Group 1 - The core business of the company includes resin and curing agents for casting, as well as specialty phenolic resins [2] - The downstream customers of the company are diversified across various sectors such as automotive, internal combustion engines, agricultural machinery, machine tools, power generation, engineering machinery, shipping, and rail transportation [2]