沧州明珠：BOPA薄膜产品下游客户主要是彩印厂

Group 1 - The company, Cangzhou Mingzhu, has three main product categories: PE pipeline products, BOPA film, and lithium-ion battery separator products [1] - PE pipeline products are used in infrastructure construction, primarily for gas and water underground network applications [1] - BOPA film products are mainly used in food packaging and have applications in general industrial packaging, personal care products, electronic packaging, home products, and some agricultural products [1] - Lithium-ion battery separator products are specifically used in lithium-ion batteries [1]