Dingxi Longruan Biology Science Technology & Co.,Ltd was founded in July,2004,which is situated in Dingxi City,Gansu Province,China.The company coveres23,000 square meters. The company has got certificates of ISO9001:2000 & HACCP for Longruan brand casein products which are made from unpolluted milk unique in Qinghai-Tibet plateau.With modern workshop and facilities,updated technology,sound quality control system and professional R&D team.Annual product capacity has reached 5000MT,most ...