1. Water & Oil Repellent Treatment (拒水防油处理)

The Problem: Ceramic/Stone dust often contains moisture from upstream processes. Wet dust turns into mud on normal bags.
问题：陶瓷/石材粉尘常带有上游工序的水分。湿粉尘在普通布袋上会变成泥。

Porvoo Solution: We dip our bags in a special hydrophobic agent. Water beads up and rolls off, just like on a lotus leaf!
波尔沃方案：我们将滤袋浸泡在特殊的疏水剂中。水珠会像在荷叶上一样滚落！

2. PTFE Membrane (PTFE 覆膜技术)

The Concept: We laminate a super-thin PTFE layer on the bag surface. The pore size is only 0.1-0.5 microns.
概念：我们在布袋表面覆合一层超薄的 PTFE 膜。孔径仅为 0.1-0.5 微米。

The Result: Surface Filtration. Dust stays on the surface and is easily blown off by the pulse jet. It never penetrates deep into the fabric.
结果：表面过滤。粉尘停留在表面，很容易被脉冲气流吹走。它永远不会深入织物内部。

3. Anti-Static for Coal/Mining (防静电技术)

For coal mills or explosive dust, we weave Stainless Steel Fibers into the bag to conduct static electricity safely to the ground.
对于煤磨或易爆粉尘，我们将不锈钢纤维织入布袋，将静电安全地导向地面。