1973
Formation   of   private   company
Peter   Christiansen   Water   Treatment   Technology.
1975
Moved   from   rented   offices   to   own   commercial   and   production   premises   in   Westercelle.
1980
Legal   form   changed   to   Chriwa   Water   Treamtent   Technology   GmbH.
Formation   of   a   subsidiary   company   called   CUSS   (Chriwa   Environmental   System   Technology   and
Service   GmbH)    to   include   a   new   branch   of   production,   for   decontamination   and   removal   of   brownfield   sites,   harmful   substances   and   biological   waste   water   treatment.
1983
To   meet   the   requirements   of   an   increased   production   volume   new   premises   were   needed.
With   solidarity   to   the   region   of   Celle,   Hambühren   has   been   chosen   as   the   new   company’s   location.
1985 ‐ 1987
Establishment   of   an   international   distribution   system.
Implementation   of   a   comprehensive   operating   software   for   administration,   production   and   construction   (e.g.
3D   CAD).
1989
Upon   opening   of   the   eastern   european   markets   the   existing   distribution   system   has   been   expanded,   personnel   and   production ‐ related   capacities   were   increased.
1993
Formation   of   offices   in   East   and   South   Germany   and   miscellaneous   european   countries.
1994/1995
Development   of   own   operating   data   logging,   process   visualisation   and   electronic   control   systems.
A   comprehensive   controlling   was   established.

2000
Taking   over   of   miscellaneous   companies   and   taking   significant   shares   in   companies   to   complete   the   product   range.
2004
The   office   building   size   increased   by   30%.
The   production   facility   was   almost   doubled   by   installing   two   new   assembly   and   storage   buildings   with   a   working   area   of   3.000
m².
2008/2009
Formation   of   a   holding   company   to   control   the   miscellaneous   company   divisions.
2010/2011
Fabrication   of   vessels   outsourced   to   a   seperate   enterprise.
For   this   purpose   a   new   production   hall   with   3,000   m²   of   available   space   has   been   built   and   equipped   with   state ‐ of ‐ the ‐ art   machinery   and   production   equipment.
At   the   same   time   the   pre ‐ assembly   premises   could   be   increased   by   approx.
30%   (1,200   m²)   which   results   in    an   optimized   processing   time,   especially   for   large   plants.
2012
At   the   end   of   the   year   Chriwa   secured   the   largest   order   in   the   company's   history   from   Latin
America.
The   project   was   completed   and   handed   over   succesfully   by   mid   of   2014.
2014/2015
To   date   approx.
200   people   are   directly   or   indirectly   involved   in   the   success   and   excellent   reputation   of   Chriwa   products.