On Chemball
My Chemball
+86-571-8627 3270
![](https://res.chemball.com/upload2/576d67e8-8bdc-4ec7-a601-a3890f6ea025.png)
China Tech (Tianjin) Chemical Co., Ltd.
China Tech (Tianjin) Chemical Co., Ltd.
Main Products:
3,3',4,4'-Benzophenonetetracarboxylic Dianhydride / 4,4'-(Hexafluoroisopropylidene)Diphthalic Anhydride / 3,4'-Oxydianiline