6 Cell 180 Cell 244 Cell 589 Cell 246 Cell 400 Cell 24 Cell 52 Cell 5 Set 4 Unit (contact CIF) 15 Piece Carrier relay multiplex converter

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1 The main procurement plan in fiscal 2018 *We are considering implementation methods and timing aiming for thorough efficiency improvement. Long life control valve type storage battery 40Ah 2V 1cell 6 Cell 150Ah 2V 1cell 180 Cell 200Ah 2V 1cell 244 Cell 300Ah 2V 1cell 589 Cell 500Ah 2V 1cell 246 Cell 700Ah 2V 1cell 400 Cell 1000Ah 2V 1cell 24 Cell 2000Ah 2V 1cell 52 Cell Device for communication monitoring, input Options for AC power supply duplication 5 Set and output of information at contacts Slim unit (main unit) (contact CIF) Stationary (main unit) Contact output CIF 16POS Contact input CIF 64POS 15 Piece Carrier relay multiplex converter 4W-INF (3ch/piece) 3 Piece CR-INF(1ch/piece) 10 CR-MUX unit 2 CR-OPT unit 27 Unit OPT-INF(1ch/piece) 76 Piece Blank box (mounted at 450 mm) User's manual 9 Copy Equipment rack (including power supply) 17 Unit Measurement cable/plugs 9 Set Accessories storage box 9 Set 1.5 M photoelectric converter 1.5 M CR-OPT F (1 CH/piece) 1.5 M electric unit User's manual, code, spring, etc. Equipment rack (for communication equipment) Static AC uninterruptible power supply unit Generic CVCF 1 unit for 1 system, 15 kva (CVCF/generic CVCF) Generic CVCF 1 unit for 1 system, 50 kva CVCF 2 units for 1 system, 10 kva (including cross board) Generic CVCF cross board single unit, 30 kva Generic CVCF input/output board (1 unit for 1 system), 15 kva Generic CVCF input/output board (1 unit for 1 system), 50 kva, single-phase output Generic CVCF 5 kva 1 / 6 ページ

2 The main procurement plan in fiscal 2018 *We are considering implementation methods and timing aiming for thorough efficiency improvement. Static converter (INV) Compact INV 110 VDC input, 2 kva 1 unit for 1 system 200 V, 5 kva 1 unit for 1 system 200 V, 7.5 kva 1 unit for 1 system 100 V, 5 kva Static converter (INV) Compact INV DC48 V input, 2 kva Thyristor rectifier 12V 40A 100V 30A Constant-voltage floating charger unit 24 VDC 250 A Equipment rack 2 Set 24 VDC 50 A Unit Cross board Charger 100 VDC, 100 A IP centrex unit IP type base station (BS) AC Adaptor for IP type base station (BS) Multicast adapter Public gateway PRI IP unit rack W600D600H1000 single swing door w/ normal accessory W600D600H1600 single swing door w/ normal accessory W600D600H2000 double swing door w/ normal accessory W600D600H2300 single swing door w/ normal accessory W600D600H2300 double swing door w/ normal accessory W600D900H1600 single swing door w/ normal accessory W700D700H2000 single swing door w/ normal accessory W700D700H2300 single swing door w/ normal accessory 100 VAC outlet, single system 1 Set 100 VAC fact line, single system 42 Set Cable holding bar Base plate 20 Piece Rack plate (mobile type) Rack plate (fixed type) 35 Piece Double swing door 23 Set Power distribution panel 1 input 7 outputs 3 Piece Power distribution panel 1 input 10 outputs 1 2 / 6 ページ

3 The main procurement plan in fiscal 2018 *We are considering implementation methods and timing aiming for thorough efficiency improvement. IP terminal for power safety purpose Modem I/F card 1 Piece Rack type (slave) Contact communication supervision data interface card 5 Piece Rack for communication equipment (slave) IP network device Layer 2 switch 10 G x 24 ports 2 Layer 2 switch 1 G 48 ports 8 Unit Layer 3 switch 10 G 48 ports Layer 3 switch 1 G 48 ports L3 SW, c4500 extension board Switching hub 10/100 BASE-TX 24 ports (without stacking capability) 2 IP network device Switching hub (for IP centrex) PoE 2 Switching hub (for general operation), compact size for application, 10/100-TX24 2 Switching hub (for general operation) for server, Giga feature, 1000 BASE-X2, 10/100/1000-T/TX24, supporting FlexLink 3 Switching hub (for general operation) for electric station, 100 VAC, 110 VDC Router (for power safety), edge (cabinet, CPU, 4 ports of 1000 BASE-X mounted) Layer 2 switch (for power safety) 1000 BASE-SX SFP 1 Router (for power safety), module 1000 BASE-SX SFP 18 Unit Router (for power safety), module, GE line card for edge (5 ports of 1000 BASE-X) Layer 2 switch (for power safety) SFP module 6 Piece Layer 2 switch (for power safety), edge (24 ports of 10 BASE-T/100 BASE-TX) 5 Layer 2 switch (for power safety), core (4 ports of 1000 BASE-X, 24 ports of 10 BASE-T/100 BASE-TX) 1 Layer 2 switch (for power safety), sub-local (24 ports of 10 BASE-T/100 BASE-TX), AC100 5 Layer 2 switch (for power safety), sub-local (24 ports of 10 BASE-T/100 BASE-TX), DC Layer 2 switch (for power safety), sub-local (24 ports of 10 BASE-T/100 BASE-TX), DC24 Layer 2 switch (for power safety), sub-local (24 ports of 10 BASE-T/100 BASE-TX), DC48 Layer 2 switch (for power safety) for backup circuit (24 ports of 10 BASE-T/100 BASE-TX), AC100 Layer 2 switch (for power safety) for outdoor use 7 Unit Layer 2 switch (for power safety) for on-premises use 30 Unit Layer 2 switch (for power safety), power module 7 Unit Inserted module 10 G-SX SFP 36 Piece Wireless LAN access point 6 Wireless LAN antenna 23 Wireless LAN power supply unit 6 3 / 6 ページ

4 The main procurement plan in fiscal 2018 *We are considering implementation methods and timing aiming for thorough efficiency improvement. Desktop line terminating unit 1.5 Mbps, LANDCE 1 Dam discharge warning unit Siren 0.4kW Siren 3.75kW Siren control panel Speaker (30 W) Speaker (50 W) 30 Unit Speaker (100 W) 3 Speaker mounting fixture 3 Motor siren (cold climate version) 0.75 kw Motor siren (cold climate version) 2.2 kw Motor siren (cold climate version) 3.7 kw Motor siren (cold climate version) 5.5 kw Motor siren (cold climate version) 7.5 kw Printer Rain observing rain-gage sensor Dam discharge warning unit Rain observing slave station, observation unit Rain observing control unit Antenna Antenna (including coaxial arrester) 5 Piece Warning unit (wireless) Warning unit (wired) 8 Unit Recorded alarm player 7 Unit Sound-collecting microphones 8 Unit Monitor and control unit Monitor and control unit (back-up function part) Monitor and control unit (with group control function) Monitor and control unit (remote monitoring table) Joint box (speaker branch point) 2 Line connecting device (outdoor) 16 Unit Line connecting device (indoor) Operator console Operator console (including printer storing device) Simplified operator console Wireless transmitter and receiver unit (1W, including auxiliary unit) Equipment for scheduled broadcast 4 / 6 ページ

5 The main procurement plan in fiscal 2018 *We are considering implementation methods and timing aiming for thorough efficiency improvement. Optical wiring board Large capacity optical wiring board, connector unit (24-core unit) Large capacity optical wiring board, connector unit (40-core unit) Compact optical wiring box Compact optical wiring board H: 2300 mm New PCM terminal station unit 1.5M-MUX 1.5M multiplication unit(1.5m-mldx) 19 SYS 1.5M-MUX Analogue channel(4wva) 76 Piece 1.5M-MUX Digital channel(64kur) 45 Piece 1.5M-MUX base unit (Modurack, ALM panel, power supply) 1 6M-MUX 1.5M electric interface 29 Piece 6M-MUX 6M optical interface 1.31μm 6M-MUX 6M multiplication unit(6m-mldx) 9 SYS 6M-MUX 6M electric interface 5 Piece 6M-MUX base unit (Modurack, ALM panel, power supply) OCE OCU (station circuit terminating interface) 40 Piece OCE base unit (Modurack, ALM panel, power supply) 6 Unit Analog audio tester Clock distributing unit C-REC (N, E system), C-DIS 12 SYS Blank box (mounted at 450 mm) New PCM terminal station unit User's manual 19 Copy Cord for measurement and spring box 18 Set Accessory box 18 Set Equipment rack 1 Digital multiplex transceiver 6.5 GHz band 26 Mb/s (1W) 6 Unit Parabola antenna 1 polarized wave, 3.0 m dia., including radome rack Switchboard for communication Housing W800 H2000 D800 Main NFB 3P 200AT Main NFB 3P 350AT 1 Piece Main NFB 3P 125AT 6 Piece Main NFB 3P 150AT 3 Piece 5 / 6 ページ

6 The main procurement plan in fiscal 2018 *We are considering implementation methods and timing aiming for thorough efficiency improvement. Communications cabinet panel Housing W520 H1700 D900 Housing W260 H1350 D400 Main NFB 2P~300AT Main NFB 2P~30AT Main NFB 2P~50AT Main NFB 2P~30AT 66 Piece Main NFB 2P~15AT Combined multiplex terminal station unit Blank box (mounted at 450 mm) Basic unit Asynchronous unit Monitor and control terminal Equipment rack for communication equipment (including equipment rack power supply) Individual alarm contact output interface (12 contacts) 2 Transmission route interface 32M optical interface (32MOE), 1.55 μm Transmission route interface 32M optical interface Multiplication unit (32M-MLDX) Transmission route interface 6M optical interface Multiplication unit (6M-MLDX) 7 Piece Transmission route interface Synchronous 1.5 M electric interface (Synchronous 1.5 ME) 1 Piece Transmission route interface Asynchronous 1.5 M electric interface (Asynchronous 1.5 ME) Transmission route interface Asynchronous 6 M electric interface (Asynchronous 6 ME) Attachment parts, cord for measurement and spring box 3 Set Attachment parts, accessory storage box 3 Set Attachment parts, user's manual 4 Copy Optical wavelength multiplex terminal station Housing with 8 circuits and 2-core unit Transponder 1000 BASE-TX IP converter for audio signal Master, 2W/4W audio IF board 20 Unit Master, IF cable Master, main unit (housing) * 100 VAC/DC 48 compatible IP converter for audio signal Slave, 2W/4W audio IF, 100 VAC, 24 VDC, 48 VDC, 110 VDC 4 Digital transmitter for system control BSS-TT transmission unit (7 elements transmission) Transmitting equipment for computation information receiving unit (10 W) Optical fiber cable for OPGW SM 12C (silicone conductor type) 8,480 m SM 24C (UV conductor type) 660 m SM 24C (silicone conductor type) 42,000 m SM 48C (UV conductor type) 7,150 m SM 60C (UV conductor type) 2,000 m DSF 24C 4,900 m 6 / 6 ページ