Description: Slightly yellow or white crystalline powder Freely soluble in methanol, alcohol, ester but insoluble in water. Specification: The product contains not less than 93.0% of 22, 23 Dihy droavermectin B1a and not less than 97.0% of 22, 23 Dihy droavermectin B1(B1a+B1b). Indication for Use: Anti-parasite antibiotic .It can repel and kill nematode, hookworm, worm insect, worm and acarid hosted in animal gastrointestinal tract. It is mainly used to treat domestic animal diseases of nematode, itch mite and parasitic insect. Storage: Kept in a well-closed container and protected from light and stored in a dry place. Packaging: 1, 5kg/tin (according to customer requirement)