基础化工行业双周报：维生素D3价格快速上涨，涤纶长丝板块有所回调

Investment Rating - The report maintains an "Overweight" rating for the basic chemical industry [2] Core Views - The basic chemical industry has experienced a decline of 4.08% over the past two weeks, underperforming the CSI 300 index by 2.23 percentage points, ranking 22nd among 30 sectors [5][7] - The price of Vitamin D3 has surged by 52.94% recently, primarily due to tight supply of its raw material, cholesterol [14][15] - The polyester filament sector has seen some adjustments following the announcement of a significant investment project, but the long-term impact on supply is expected to be minimal [5][19] Summary by Sections Market Review - As of July 5, 2024, the basic chemical industry has declined 4.08% in the last two weeks, with a year-to-date decline of 14.56% [5][7] - The top-performing sub-sectors in the last two weeks include fluorochemicals (+1.35%) and synthetic resins (+0.77%), while the worst performers include carbon fiber (-9.48%) and lithium battery chemicals (-9.1%) [7][8] Chemical Product Price Trends - The top five chemical products with price increases in the last week are Vitamin D3 (+52.94%), Vitamin K3 (+14.94%), sulfur (+5.10%), PVA (+4.69%), and sulfur (+4.06%) [14][15] - The top five products with price declines are disperse dyes (-19.05%), trichloroethylene (-10.78%), reactive dyes (-9.52%), PTMEG (-6.90%), and argon (-6.70%) [14][17] Industry News - A significant investment project for a 1.2 million ton polyester filament plant was signed, with a total investment of approximately 10 billion yuan, expected to generate substantial revenue upon completion [19] - The Ministry of Ecology and Environment has proposed regulations affecting refrigerants in the automotive and appliance industries, which may impact future demand for certain chemical products [19] Company Announcements - Xinjiang Tianye announced a projected net profit of approximately 6.7 million yuan for the first half of 2024, marking a turnaround from losses in the previous year [20]