We, linxia huaan biological products co. , ltd. Are specialized in producing casein and casein based products in China, as one of largest manufacturer of casein, we can supply acid casein including edible and industrial grade, rennet casein, sodium caseinate, calcium caseinate, we are certified both by ISO9001: 2000 and kosher, our brand sihexueyu has won a good reputation not only in domestic market but also in USA, EU countries, southeast Asia, mid-east, Africa and Taiwan region. Please visit us through clicking our web site in recent years, Chinese casein is sharing very large market on international markets, we are confident in building business relations with you through offering most competitive price and supplying most qualified casein products than others in order to keep long-term business relationship with you.