1,Pyrethrins% 48-52%; 2,Naturual Insecticide; 3, Free sample(clients pay express freight); 4,50 MT/year 5,self-owned lands Pyrethrum refined extract is pesticidal active substance which is extracted from dried Pyrethrum flower, a species of chrysanthemum family, through smashing, extracting, refining, blending, and packaging. It is a pest nerve poison with knock-down effect against many pests. ...