| 简介 |
According to the present invention, antifreeze the glycols in water or 100 antifreeze composition agent manner under a standard of parts by weight, SiO 2 and a, SiO 2 100 under a standard of parts by weight to 25 parts by weight of 20 Al 2 O 3 and a, SiO 2 100 based on the parts by weight of 0.8 to 1.2 parts by weight of TiO 2 and a, SiO 2 100 based on the parts by weight of 8 to 12 parts by weight of Fe 2 O 3 And a, SiO 2 100 under a standard of parts by weight 6 x 10 -2 to 15 x 10 -2 parts by weight of including for Sr includes a rare earth metal. |
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