Item No is consist of usage with capacity or material with capacity. Bottle material has HDPE, PET, PS, Acrylic and Glass. Used field is in food and medical products.

Taking examples of some items as below:

S-100C: "S" is food, "100" is the capacity 100cc.
M-150N: “M” is medicine; “150” is the capacity 150cc.

P-125A: "P" is PS material, "125" is the capacity 125cc.

A-900K: "A" is Acrylic material, "900" is the capacity 900cc.

G-10A: "G" is Glass material, "10" is the capactiy 10cc.