Group 1 - The company, Woer Heat Shrinkable Material (002130.SZ), is a leading enterprise in the heat shrinkable materials industry, holding a significant market share in China [1] - The CEHS and CELB series heat shrinkable insulating sleeves have been integrated into the supply system of China Commercial Aircraft Corporation (COMAC) and are applied in the C909 and C919 domestic aircraft models [1]