Links:

Spar Parts: 

Non-return Valves, Screws, Barrels, Nozzles, Mixers, etc.:
Groche Technik GmbH: www.gt-plast.de

Mould cleaning  and maintenance:
Filmoor Filtermedia Solutions : www.filmoor.com
E.S. Evelyne Schulz : www.ver-rus.de

Special coatings for screws etc.:
Extreme Coatings: www.extremecoating.com

Masterbatches:

Antistatic Masterbatches:
Boussey Control: www.boussey-control.com

Colour Masterbatches (PS, PMMA, SAN, PC):
ColourSystem s.p.a.: www.color-system.it