The early usage of marking materials was limited to the median line which demarcated roads as incoming and outgoing traffic lanes. As traffic increased, roads became wider, necessitating the need for traffic lane markings. The importance of road and highway markings in reducing accidents and ensuring smooth flow of traffic increased the demand for marking materials. Marking materials are now used in zebra crossings, chevron lines, guiding arrows, and textual information. Marking materials help to ensure that proper guidance and warnings are conveyed to people who travel by foot or use any mode of transport. The materials used for marking have also evolved with marking tapes competing against paints and other materials. Road marking materials occupy a significant share in the overall marking materials market. Roads and highways together hold over 70% of the market.

成本端：前期磷矿石、硫磺、合成氨等原料上涨，支撑力渐强，磷铵市场行情强势运行。需求端：积极开展春耕备肥确保粮食安全生产，春季需求即将全面释放。供给端：行业洗牌多年全国磷肥产量总体下降，当前社会库存降至较低水平，场内货源延续偏紧态势。海外及出口市场：国际市场需求回暖而供应阶段性受阻，国内向海外出口化肥增加。

中国化工品价格指数（CCPI）：本周CCPI 较上周大幅上涨 9.8%，较上月 同期上涨17.1%，年内涨幅为22.5%，较去年同期上涨33.8%。

上周基础化工板块下跌5.8%，沪深300 指数下跌7.6%，基础化工板块跑赢大盘 1.9 个百分点，涨跌幅居于所有板块第20 位

2020 年中国化工产业链一体化能力进一步得到验证并增强，2021 年中 国化工已经处于“全球供给侧改革”后的新阶段。中国化工正站在全球 竞争优势提升的新起点上。