PRINCIPAL Office Building;
Bangunan Kantor Principal;
Bad Krozingen, Freiburg,
West-Germany;
pabrik pembuat kawat-las
Special Welding-alloy for Repair and Maintenance;
merk ESSEN di Jerman-Barat, -

Mr. Dipl. Ing. Rocky Suryajaya
( Welding Engineer & Metallurgist)

Sedang berada di PRINCIPAL OFFICE
( Agustus - September 1989) ;