. 化工板块 2020 全年业绩表现优异，2021Q1 高景气趋势有望持续。深度复盘 2009 年-2012 年和 2016 年-2018 年两轮化工上行周期，我们认为化工周期在供需共振下将延续此前的上涨趋势。长期角度来看，碳达峰和碳中和或将推动新一轮化工行业的供给侧改革。

Chlorine dioxide is a small, volatile, and very strong molecule consisting one chlorine atom and two oxygen atoms. It is abbreviated as ClO2 and exists as a free-radical in dilute solutions. It is also used as alternative to chlorine in water treatment solutions and offers the benefits of effectiveness at high pH, being unaffected by ammonia, and significant advantages over chlorine in systems susceptible to high levels of organic contaminants. It is a selective oxidizer and hence, its ability to control microorganisms in water at very low dosages makes it a cost-effective solution.

Agrochemicals are the chemicals used in the management of agricultural ecosystems and micro-organisms in the farming area. The use of agrochemicals is critical in increasing the crop yield. Agrochemicals include various fertilizers, herbicides, insecticides, fungicides, soil conditioners, and others. Fertilizers are used in the agricultural lands to increase the growth of plants and crop yield. The term agrochemicals may also include synthetic fertilizers, hormones, and other chemical growth agents, as well as concentrated stores of raw animal manure.

Infectious diseases are the leading cause of global morbidity and mortality. Healthcare facilities across the world are at significant risk of cross-contamination, which can lead to hospital-associated infections (HAIs) in patients. The Centers for Disease Control and Prevention (CDC) estimated that around four million patients acquire HAI annually, which leads to around 40,000 cases of mortality in patients. However, several advancements in surface treating technologies can be helpful in reducing patient exposure to harmful microorganisms. Surfaces of medical devices coated with antimicrobial substances have shown promising outcomes in reducing HAIs.

美国是全球最大，也是利润最丰厚的市场，全球的轮胎品牌都在美国这个成熟的市场中进行竞争，美国市场的现状很大程度反映了轮胎品牌的竞争力。从品牌市占率来看，在北美，占据配套轮胎市场霸主地位的，自然是北美自主轮胎品牌的霸主——固特异。除此以外，基本反映了全球轮胎的主要排行情况。在替换市场呈现出类似的格局，但值得注意的是，在乘用车替换市场，中国的轮胎品牌森麒麟、赛轮都占据1%以上份额；在轻卡市场，赛轮占据了1%的份额；在重卡市场，双钱、风神、三角、赛轮、中策占据了1%以上的份额。在美国市场，中国的龙头轮胎企业已经获得了一定的品牌认可，崭露头角。

化工持仓比例大幅提升，排在历史第6 高位 我们对公募基金10Q1以来的重仓股数据进行了统计和分析。21Q1 公募基金重仓持有化工股占全部A 股比例为5.06%，环比提升0.65pct；该持仓比例处在历史低点（2.09%）和高点（6.84%）的较高位置，排在历史第6 位。20Q1 受疫情影响，公募基金配置化工股意愿创下历史新低，自此之后开始逐季回升、加仓迹象明显，这是对化工行业整体周期改善的充分反映。随着化工行业下游地产、汽车、家电、纺织服装等持续景气向上，化工行业仍存在周期改善预期，基金持仓比例有望继续维持高位。

中ma国ry＃化 工品价格指数（CCPI）：本周CCPI 较上周下跌 0.4%，较上月同期上涨1.5%，年内涨幅为22.0%，较去年同期上涨55.4%。

原油价格保持回升。2021 年3 月，布伦特原油均价65.8 美元/桶，环比上升3.41美元/桶（5.46%），WTI 原油均价62.4 美元/桶，环比上升3.23 美元/桶（5.47%），布伦特-WTI 价差环比扩大至3.42 美元/桶。2020 年10 月以来，油价已经实现了连续五个月环比上涨。