Core Viewpoint - China Chemical Engineering Fourth Construction Co., Ltd. (referred to as "Sihua Construction") has received a letter of appreciation from Anhui Linhuan Coking Co., Ltd. for its efforts in the construction of a 30,000 tons/year carbonate project, highlighting the company's commitment to high-quality project delivery and professional service [1] Group 1 - Sihua Construction has successfully completed several new energy and new material projects since June, including the ultra-pure high molecular weight polyethylene project and the lithium battery new material project, showcasing its strong performance [1][2] - The ultra-pure high molecular weight polyethylene project (140,000 tons/year) utilizes self-developed ultra-pure slurry technology and incorporates BIM technology for digital pre-assembly of pipelines and steel structures [1] - The lithium battery new material project (10,000 tons) will provide key raw material support for the lithium battery sector, with Sihua Construction overcoming technical challenges and ensuring safety during construction [2] Group 2 - The 30,000 tons/year carbonate project uses dimethyl carbonate (DMC) and ethanol as raw materials, employing advanced ester exchange technology to produce electronic-grade ethyl methyl carbonate (EMC) and diethyl carbonate (DEC) [2] - The project achieved a successful trial run with the first batch of electronic-grade EMC reaching a purity of 99.99%, demonstrating Sihua Construction's capability in handling large equipment installation challenges [2] - The 200,000 tons/year caustic soda relocation and energy-saving renovation project by Hubei Yihua is a key initiative responding to national environmental policies, completing the entire process in just 13 hours, setting a record in China's chlor-alkali industry [2]