




Tel: 010-59070635
Fax: 010-59070635
E-mail: bjsihekeji2026@163.com
Address: No.1901,Building B,wangtong Center,Chaoyang District,Beijing.
Beijing Sihe science and technology limited company
Address: No.1901,Building B,wangtong Center,Chaoyang District,Beijing.
Zip code: 100020
E-mail: bing_cb@163.com
Tel:010-59070635
Fax: 010-59070635
