Group 1 - The successful launch of the first batch of ASA specialty engineering resin products by Lihua Yili Jin Refining and Chemical Co., Ltd. marks a significant achievement in the industrial upgrade driven by "chain thinking" in the Lijin Economic Development Zone [1] - The Lijin Economic Development Zone has focused on leading industries and guided key enterprises like Lihua Yili Group to implement a precise layout of "casting chains, extending chains, supplementing chains, and strengthening chains," resulting in the establishment of a petrochemical industry matrix worth hundreds of billions, covering nine major industrial chains and over 90 products [1] - The ASA resin project connects the entire chain from "refining—propylene/ethylbenzene—acrylonitrile/styrene/AMS—ASA specialty engineering resin," achieving an upgrade from basic raw materials to high value-added new materials, showcasing strong integration capabilities that attract upstream and downstream enterprises [1] Group 2 - The Lijin Economic Development Zone is making continuous efforts in the high-end chemical new materials sector, with several key projects making breakthrough progress, including a large-scale polyoxymethylene project and a high-end oil additive project targeting the "specialized, refined, characteristic, and innovative" field [2] - The deputy director of the Lijin Economic Development Zone Management Committee, Zhang Honglei, stated that the next step is to deepen the "Lihua Yili new materials ecological industrial chain+" investment attraction model, using ecological chain thinking to attract more high-quality upstream and downstream enterprises, promoting the development of a regional industrial cluster with significant influence [2]