Yantai Zhenghai Biotechnology Co., Ltd. engages in the research and development, production, and sales of bioregenerative medical materials in China. The company offers oral repair membranes, absorbable dura mater patches, active biological bones, skin repair membranes, bone repair materials, surgical packing sponges, phosphoric acid etchant, dental pit and fissure sealant, light-curing composite resin, non-absorbable surgical sutures, and self-etching adhesives. It products are used in various fields, such as dentistry, head and neck surgery, neurosurgery, and otolaryngology. Yantai Zhenghai Biotechnology Co., Ltd. was founded in 2003 and is headquartered in Yantai, China.