Polyester silos are popular for storing feed and are made with durable materials such as fiberglass and high quality resin. Options for silos include clear lower hoppers and smooth inner surfaces to aid in the distribution of feed, and UV protection to maintain product quality. Companies like Alibaba offer a variety of plastic silos that cater to different types of agribusinesses, ranging from grain, beans and rice, to animal feed storage. A stainless steel silo, manufactured in 2000, was designed specifically for storing resin, plastic or powder and has a large storage capacity of 3,480 cubic feet. In the recycling industry, silos are crucial for storage and collection of plastic fragments. The silos are available in different sizes and shapes, and offer a gas-tight environment to maintain the quality of the stored product. WFP aims to support farming families by providing air-tight, plastic grain silos that can safely store large amounts of feed for a period of six months. Bag silos are also used in agriculture, and are made of heavy plastic tubes that can store grain or fermented feed. They are lightweight and ideal for small scale storage for farmers with livestock.