2025 年上半年，基础化工行业上市公司（根据申万 2021 一级分类基础化工行业以 及轮胎行业（长江分类）上市公司合计 446 家）共实现营业收入 1.12 万亿元，同比 增长 3.1%，实现营业利润 947 亿元，同比增长 1.1%，实现归属上市公司股东的净利 润 756 亿元，同比增长 2.0%。行业整体综合毛利率为 13.1%，同比下降 0.4pcts；期 间费用率为 9.3%，同比下降 0.1pcts。行业整体净利润率为 7.0%，同比下降 0.1pcts。从价格指数上看，受原材料支撑走弱，叠加化工品产能较过剩的影响，CCPI 2025 年上半年震荡下行，CCPI 由 4317 点（25/1/6）降至 4141 点，降幅为 4.1.%；年初至今（截至 9 月 5 日）CCPI 区间累计跌幅为 7.8%。从散点图上看，截至 25/8/29，多数化工品价格价差的历史分位数仍集中在 50%以下，而个别化工品价格价差分位历史高位，包括 R22、R32、硝酸铵、R114a、磷肥等。

Home and laundry care encompasses a range of services and products designed to maintain cleanliness and organization in private households. This sector includes both the provision of cleaning services and the sale of cleaning products.

Glutamic acid is an amino acid that is used by almost all living things in the biosynthesis of proteins. It is a non-essential nutrient for humans, which means the body can produce enough to meet its requirements. It is also the most abundant excitatory neurotransmitter in vertebrate nervous systems.

A membrane is a type of selective barrier used to remove or separate a feed stream as it passes through. Membranes are generally used for gas separation. Gas separation membranes are used to separate and purify specific components from other gases or vapor mixtures. The gas separation membrane technology is widely used in gas processing applications in different industries, such as petrochemical, chemical, and manufacturing.

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