来源：金融界 金融界7月30日消息，有投资者在互动平台向天山股份提问：贵司有没有API石油水泥技术，是否有通 过国际相关机构认证？ 公司回答表示：尊敬的投资者您好，天山股份是国内拥有水泥品种最多的生产企业，最大的特种及功能 水泥基材料生产企业。油井水泥作为重要的基础材料，一直伴随着中国石油工业一并发展，公司已陆续 取得美国石油学会的APIQR证书、Q1证书、TS/29001证书，具备API标准全系列油井水泥生产能力，产 品符合国际标准的质量管理体系和生产规范。感谢您的关注。 ...

Group 1: WanTai Bio - WanTai Bio announced that its HIV urine self-test kit has received prequalification (PQ) certification from the World Health Organization (WHO), marking it as the first HIV antibody urine self-test kit globally to achieve this status [1] - This certification allows the product to participate in procurement projects by the United Nations and other global multilateral organizations, enhancing the company's international competitiveness [1] - The recognition from WHO is expected to boost investor confidence in the company's research and market potential [1] Group 2: East China Pharmaceutical - East China Pharmaceutical's subsidiary received approval from the National Medical Products Administration (NMPA) for the clinical trial of HDM2005, an antibody-drug conjugate targeting ROR1 for treating diffuse large B-cell lymphoma (DLBCL) [2] - The drug is currently in the fifth dose escalation phase of its clinical trial in China, with no dose-limiting toxicities reported so far [2] - The approval of HDM2005's clinical trial represents a significant advancement in the company's research and development in the oncology field [3] Group 3: GuiChuang TongQiao - GuiChuang TongQiao announced that it will remove the "B" designation from its stock name starting May 9, 2025, indicating that it no longer falls under the category of unprofitable companies [4] - This change reflects the company's achievement of higher operational and performance standards, which is expected to enhance its influence in the capital market and investor recognition [4]