Due to factors such as one-way transportation, cost-effectiveness, and cost-effectiveness, food products such as milk powder, starch, spices, and bulk pharmaceuticals are stored and transported using flexible bulk bag instead of rigid drums and plastic containers.

However, the main problems with this packaging method are the cleanliness and hygiene of the packaging bags, contamination, and the protection of the contents' characteristics (such as aroma and color).

To overcome these problems, the FIBC industry has developed cleanroom packaging bags to meet the packaging needs of all food and pharmaceutical products. These cleanroom bags have been successfully used by the food and pharmaceutical industries worldwide.

Zibo Yundu Company utilizes its advanced cleanroom production facilities to manufacture flexible bulk bag (FIBC) for food and pharmaceutical applications, meeting stringent customer requirements. This facility achieves a high degree of integration from fabric production to packaging, equipped with a complete air conditioning system and controlled atmosphere. The entire factory maintains the highest hygiene standards, complying with multiple international standards.

All raw materials and lubricants are approved for direct contact with food, meeting the relevant requirements of the food and pharmaceutical industries. The cleanroom is equipped with world-class equipment, such as ultrasonic cutting, slitting, and punching equipment, achieving cleaner cut edges and preventing plastic burns. All sewing machines are equipped with automatic thread cutting devices (cold and hot cutting) to prevent thread detachment. Packaging bag washing machines use high-speed clean air to clean the bags.

Before any material enters the cleanroom, it first passes through an airlock, a buffer zone between the cleanroom and the outside atmosphere. This maintains the cleanroom pressure and prevents dust from entering.