German record company with two vinyl and CD manufacturing plants. Operating under this name from January 1986 until September 1991. PolyGram transferred control of their West German manufacturing and distribution activities from [l339260] to a joint venture between Philips and DuPont Optical that was operative by January 1986 (legally effective April 1986). "Werk I", located in Hannover (Podbielskistrasse) was pressing all 10" and 12" records and did the tape duplication while "Werk II", located in Langenhagen, did all the mastering, the pressing of all 7" records (injection moulded) and the mastering and pressing of CDs. Also done in Langenhagen were the printing and assembly of vinyl and CDs. When PolyGram gained control over the PDO plant in 1991, the company and plants were transferred back to PolyGram Record Service GmbH ([l=PRS Hannover]) again. With the transition to PolyGram, Werk I was closed and all vinyl pressing was outsourced to PRS Baarn or Sonopress or Optimal or GZ Vinyl (mastering and cutting remained in Langenhagen though). How to identify vinyl (1986-1991): Vinyl cuttings show a 320 (or 3 20) in the matrix. Use Lacquer Cut At - PDO, Germany in these cases. How to identify CDs (1986-1991): This plant is directly credited in the CD matrix string as either "Made in West Germany by PDO" or "Manufactured by PDO Hanover, West Germany" or "Made in Germany by PDO" after the German reunification. Important note: PDO was often repressing CDs but left the old artwork of the preceeding plant. In those cases, please only add PDO, Germany with Reissue as format. CDs credited with "Made by Polygram, Hanover (or Hannover)" or simply "Made by PolyGram" belong to [l=Polygram, Hanover, West Germany] plant.
Obsolete: Philips and Du Pont Optical GmbH Werk I: Podbielskistrasse 164 (1986 - 1991) 30177 Hannover Telephone +49 511 6968-1 [obsolete] Werk II: Klusriede 26 30851 Langenhagen Telephone: +49 511-7130602 Fax: +49 511-7231177