利安隆：润滑油添加剂API认证涉及多个产品品类，目前已有个别品类完成认证

Group 1 - The company has received inquiries regarding the progress of its lubricant oil API certification, which was previously expected to be completed in the first quarter [1] - The company confirmed that the API certification for lubricant additives involves multiple product categories, and some categories have already completed the certification [1]