Semcycle's address

Does anyone know a more precise address for Semcycle than:

P.O. Box 1675 NL-3600 BR Maarsen The Netherlands

Semcycle have not sent a part I have paid for (in September at the EJC, Leeds)
and have not answered a letter and a fax. The part is question is a seat pole to
connect my DM to one of their saddles (which they sold me at Leeds).

Luckily I have a very nice Dutch friend at the circus society here who, during
her christmas holidays will go and get the part in person for me :slight_smile: ! (In
Holland students can travel for free on the railways.)

What does NL-3600 BR Maarsen mean? Could you physically find the factory
from this?