Kolthoff GmbH

Kolthoff GmbH is a German processor and supplier of plastic regranulates for industrial use, based in Filsum and founded in 1999. The company concentrates on PP, HDPE, LDPE and SBS, serving injection molders and customers in automotive supply, construction, non-food packaging, furniture, agriculture and horticulture. Using modern regranulation and homogenization technology, it delivers consistent material quality and stable processing behavior. Regranulates are optimized for injection molding and offered in natural, white, black or custom colors. Beyond standard grades, Kolthoff provides individual material solutions and contract granulation of customer-owned plastics, returning production residues to the recycling loop.