Felines were discovered by China Animal Protection Power.
The court will rule on the cases of four other dissidents later this week.
Authorities worked to complete a sweep of the site where two explosions last week killed 114 people and injured more than 700.
Chinese officials are trying to "rescue the missing" after a series of massive explosions.
The company violated packaging standards during a safety inspection two years ago, the safety bureau said.
Dozens were killed and hundreds injured in the blasts.