76354421
Jan 2, 2002
Dec 31, 2002
[ APPARATUS AND [ PART ] *PARTS* THEREOF FOR WASTE WATER TREATMENT, SEWAGE SLUDGE TREATMENT, AND WATER REFINEMENT, NAMELY, WATER FILTERS, WATER PURIFIERS, WASTE WATER PURIFICATION UNITS, WATER PURIFICATION UNITS; SEWAGE TREATMENT PLANTS ]
Environmental Control ApparatusPLANNING AND CONSTRUCTION OF SEWAGE PLANTS AND WATER REFINEMENT [ PANTS ] *PLANTS*
Building Construction and Repair[ ENGINEER ] * ENGINEERING* SERVICES RELATING TO SEWAGE PLANTS AND WATER REFINEMENT PLANTS; ENGINEERING SERVICES, TECHNICAL CONSULTATION SERVICES IN THE FIELD OF WASTE WATER TREATMENT, SEWAGE SLUDGE TREATMENT, AND WATER REFINEMENT
Computer and Scientific