Address: No. 42, JiuDa Road, Lanzhou,Gansu, China
Postcode:730000
Telephone:+86 931 8840883 2130628
Fax：+86 931 4978688
Website：
http://www.longruan.com.cn
http://www.longruancasein.com
Email：longruan@longruan.com.cn
casein001@126.com
longruancasein@yahoo.com
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