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By certification 
Walnut shell grits can be used to fill boxing bags, pillows, toys, cushions, etc. it has good dispersion and air permeability. It is a natural green product without any chemical components.
The products are packed in woven bags of 20 or 25 kg, or in paper bags，It can also be packaged in container bags。
http://www.chinawalnutshell.com/
