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经营范围
发明名称
PRODUCTION OF COLLOIDAL SILICA
摘要
申请公布号
JPH02172812(A)
申请公布日期
1990.07.04
申请号
JP19880326308
申请日期
1988.12.26
申请人
ASAHI DENKA KOGYO KK
发明人
SANKAI TAKAO;TADA SHUICHI;HIRATSUKA ICHIRO
分类号
C01B33/148;C01B33/149
主分类号
C01B33/148
代理机构
代理人
主权项
地址
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