[step Pharmaceutical: subsidiary signs Technology Development contract with Xi'an Jitai] according to the announcement of step Pharmaceutical, Baoding Tianhao, a wholly-owned subsidiary, signed two "technology development contracts" with Xi'an Jitai, entrusting Xi'an Jitai to study Avanafil tablets (specifications: 200mg, 100mg), which was consistent with the quality and efficacy of the original research drugs, and finally obtained the drug registration certificate of the project. Xi'an Jitai was commissioned to study vardenafil hydrochloride tablets (specifications: 20mg, 10mg) to achieve the same quality and efficacy as the original research drugs, and finally obtained the drug registration certificate of the project.