Qingdao Songfon Biotechnology Co,.LTD is a competitive supplier of chemicals in china. We dedicated to the development, production and marketing of biological buffers, biological enzyme chromogenic agents, in vitro diagnostic kits and bioelectronic writing equipment. Our company is located in qingdao economic development zone，shandong Province. We have our manufacturing&research bases and contract manufacturing in China. We have a strong and professional team engaged in pharmaceutical raw mater...