Yubo International Biotech LimitedOTC: YBGJ

OTC Markets Group Welcomes New OTCQB Companies – May 1

· Issued by Yubo International Biotech Limited

OTC Markets Group Inc. (OTCQX: OTCM), operator of regulated markets for trading 12,000 U.S. and international securities, announced the following companies are approved for trading on the OTCQB Venture Market:

CalciMedica Inc. (OTCQB: CALC) CalciMedica is a clinical-stage biopharmaceutical company focused on developing therapies for life-threatening inflammatory diseases with high unmet need. CalciMedica’s proprietary technology targets the inhibition of CRAC channels designed to modulate the immune response and protect against tissue cell injury, with the potential to provide therapeutic benefits in life-threatening inflammatory diseases for which there are currently no approved therapies. CalciMedica’s lead product candidate Auxora, a proprietary, intravenous-formulated CRAC channel inhibitor, has demonstrated positive and consistent clinical results in four completed efficacy clinical trials. Auxora is in development for acute AP with SIRS and AAP. CalciMedica was founded by scientists from Torrey Pines Therapeutics and the Harvard CBR Institute for Biomedical Research, and is headquartered in La Jolla, CA.

DEVVSTREAM HLDGS INC. (NEO: DESG; OTCQB: DSTRF) DevvStream is a technology based ESG company that advances the development and monetization of environmental assets, with an initial focus on carbon markets. DevvStream works with governments and corporations worldwide to achieve their sustainability goals through the implementation of curated green technology projects that generate renewable energy, improve energy efficiencies, eliminate or reduce emissions, and sequester carbon directly from the air. DevvStream also helps these organizations meet their net zero goals by providing them access to high-quality carbon credits.

LITHIUM ONE METALS INC (TSX-V: LONE; OTCQB: LOMEF) Lithium One Metals is a Canadian exploration company specializing in the acquisition and development of high-potential lithium properties in Ontario and Quebec. Our team of experienced geologists and prospectors are at the forefront of the search for the next generation of lithium deposits.

ROK Resources Inc. (TSX-V: ROK; OTCQB: ROKRF) ROK Resources (ROK) is headquartered in Saskatchewan and focused on sustainable exploration and development within the Western Canadian Sedimentary Basin (WCSB). Our diverse asset base is matched only by our management team's significant depth in multiple geological areas of conventional oil & gas across both Saskatchewan and Alberta. ROK's team is guided by strategy and sustainability and is devoted to employees, shareholders and responsible economic growth.

Thunder Gold Corp. (TSX-V: TGOL; OTCQB: TGOLF) Thunder Gold Corporation, formerly White Metal Resources. is a junior exploration company focused on gold discovery in Canada. Their flagship property, Tower Mountain, is located 5-km off the Trans-Canada highway, 50-km west of Thunder Bay, Ontario. The property lies within the late Archean Shebandowan greenstone belt, an emerging gold district in northwestern Ontario. It consists of un-patented and patented lands totalling 1,968 ha. Exploration to-date suggests the property offers a large gold endowment. Gold mineralization is widespread, and diamond drilling has identified low-grade gold mineralization extending outward for at least 500-meters from a central alkalic intrusion known as the Tower Mountain Intrusive Complex. Drilling has established persistent gold grades from 0.1 to 1.0 g/t along a 1,500-meter-long x 500-meter wide x 500-meter deep block of volcanic-volcaniclastic rocks immediately west and adjacent to the central alkalic intrusion. The remaining 6,000 meters of strike length surrounding the intrusion are untested. Tower Mountain shows many of the classic indicators of being an Intrusion Related Gold Deposit, which is a highly desirable exploration target.

Yubo International Biotech Limited (OTCQB: YBGJ) Yubo International Biotech Limited (together with its subsidiaries, "Yubo") is a U.S. holding company. Through its wholly-owned subsidiaries, and certain contractual arrangements with a PRC entity, Yubo provides research and development and application of endometrial stem cells. Yubo is committed to building the first public endometrial stem cell repository in the world. Yubo offers its products and services under the brand "VIVCELL". Yubo's product offerings include healthcare products for respiratory system, skincare products, hair care products, healthy beverages and male and female personal care products. Yubo also offers stem cell related services including cell testing and health management consulting services.

U.S. investors can find current financial disclosure and Real-Time Level 2 quotes for these companies on www.otcmarkets.com.

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