Because it’s hygroscopic, so the HPMC should be packed in double bags, with an inner layer of polyethylene film bag and outer layer of the coated woven bag, and keep the product away from moisture and water, don’t place together with other chemicals.
![HPMC factory in China](https://wincellulose.com/wp-content/uploads/2021/03/HPMC-包装-1024x576.jpg)
If one bag can’t be used up at once, please make sure the rest is sealed well.