Shennong materia medica agricultural group, formerly known as tangshan double happiness property company, by the chairman of the board of directors of the company xue-zhe liu, general manager of Yang Honglin couple was founded in 1996. Double happiness property company changed its name to 1998 tangshan double happiness property management co., LTD. In 2002 and renamed as tangshan double happiness realty service co., LTD., registered capital of 15 million yuan, has the national 2nd class property qualifications. For many years, the double happiness property under the guidance of chairman Yang Honglin xue-zhe liu