MICHEM CONCENTRATES ON CONSTRUCTION CHEMICALS Michem products include MilaCell® Cellulose Ether,TenaBrix® Polypropylene Fiber,Protizerr® Superplasticizer,Curasta® Gypsum Retarder and Afoamia® Defoamer Powder. Products MilaCell® Cellulose Ether TenaBrix® Polypropylene Fiber Protizerr® Superplasticizer Curasta® Gypsum Retarder