After review, this certification is issued in accordance with relevant verification procedures to prove the authenticity and effectiveness of the disclosed content. Value of carbon footprint per declared unit of product: 453.84 kg CO2 equivalent.

Raw material acquisition and processing stage

Production stage

Daqing Oilfield Design Institute Co., Ltd.

Guye 1 Purified Crude Oil

经审核，根据相关核查程序发布本认证，对披露内容的真实性和有效性予以证明。每声明单位产品碳足迹数值：453.84 千克二氧化碳当量。

古页 1 净化原油

碳足迹信息

认证档案

产品碳足迹认证

碳衡联盟链