Shandong Sito Bio-technology Co., Ltd. researches and develops new steroid hormones, intermediates, and derivatives. Its products include 9a-hydroxyandrostenedione, 17a-hydroxyprogesterone, 17a-hydroxy progesterone derivatives, anecort acetate, dexamethasone epoxy hydrolysate, progesterone intermediate, opener, tetraene, androstenedione, ketal, acid removal, 3-ketal, and betamethasone epoxy hydrolyzate, as well as 1,4-androstenedione. The company was founded in 2002 and is based in Heze, China.