In this research we use both High Density Polyethylene (HDPE). and Low Density Polyethylene (LDPE)were used as matrix to the composite material and fish shell particles were used as a reinforced filler. Plunger injection molding method were used to prepare samples which have different filler percentage as below:- 1. Pure High Density Polyethylene (HDPE). https://parisnaturalfoodes.shop/product-category/tulsi-neem-soap-bar/