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By certification 
Product name: Mask belt adjustment buckle
Material: Divided into 2 kinds of materials: silicone and environmentally friendly plastic PVC
Shape: cylindrical, oblate
The main purpose of the mask belt adjustment buckle: When wearing a mask, because the face size is different, the elasticity will fall off at this time. The mask belt adjustment buckle can be slid and fixed to adjust the length of the imported mask belt.
Product unit weight: one is about 0.25grams
Product packaging: 10,000 pieces are packed in PE plastic bags, and then the outer packaging is a cardboard box.
http://www.yefma.com/
