Notice of advertisement published in the Nikkei Sangyo Shimbun by Nikkei Inc. on May 23, 2022.

[Oil, kerosene, light oil, and water / screw connection specification] For transferring fuel or water in places without power or during emergencies! Large capacity type 2,000cc/stroke.

◎Emergency water supply pump ◎Easy to operate ◎Standing action type 《Benefits》 ● Performance of 4m suction (no priming required) and 7m discharge ● Usable in locations without power supply ● Can handle high-viscosity liquids and waste oil ● Allows for work while standing ● Large capacity of 2,000cc per stroke 《Features》 ● Made of aluminum ● Handle can be replaced every 90° ● Easy to disassemble and assemble 《Applications》 ● Water supply and drainage pump for emergencies ● Emergency waste liquid pump for facilities like factories ● Pump for construction and civil engineering work ● Fuel supply pump for various vehicles and machinery ● Maintenance for machinery and various facilities ● Bilge pump and emergency equipment for ships and boats ● Rainwater utilization system for households ● Used cooking oil collection 《As an emergency pump》 ● Can suction up to the 2nd or 3rd floor of a building ● Usable for refueling emergency power supply on building rooftops ● For transferring toilet water or water tanks in emergencies

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[Oil, kerosene, light oil, water / screw connection specification] For transferring fuel or water in places without power or during emergencies! Emergency water supply pump kit.

◎Emergency water supply pump ◎Easy to operate ◎Standing action type 《Benefits》 ● Performance of 5m suction (no priming required) and 7m discharge ● Usable in locations without power supply ● Can handle high-viscosity liquids and waste oil ● Work can be done while standing ● Hose attachment and detachment is easy with lever coupling 《Features》 ● Made of aluminum ● Handle can be replaced every 90° ● Easy to disassemble and assemble 《Applications》 ● Water supply and drainage pump for emergencies ● Emergency waste liquid pump for facilities such as factories ● Pump for construction and civil engineering work ● Fuel supply pump for various vehicles and machinery ● Maintenance for machinery and various facilities ● Bilge pump and emergency equipment for ships and boats ● Rainwater utilization system for households ● Waste cooking oil collection 《Included in the set》 ● Diaphragm pump: ST-HDOS-32 (40) ALB: 1 unit ● Lever couplings: 2 pieces (32・40) ● Strainer: 1 piece ● Discharge hose: 1 piece, 5m with coupler (Φ32・Φ38) ● Suction hose: 1 piece, 3m with coupler (Φ32・Φ38) ● Handle: 1 piece

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【For oil, kerosene, diesel, and water / Screw connection specification】 Ideal for transferring fuel or water in places without power or during emergencies! Despite being a manual pump, it has excellent suction capability.

◎Emergency water supply pump ◎Easy to operate ◎Standing action type 《Benefits》 ● Performance of 5m suction (no priming required) and 7m discharge ● Usable in locations without power supply ● Can handle high-viscosity liquids and waste oil ● Allows work to be done while standing 《Features》 ● Made of aluminum ● Handle can be replaced every 90° ● Easy to disassemble and assemble 《Applications》 ● Water supply and drainage pump for emergencies ● Emergency waste liquid pump for facilities such as factories ● Pump for construction and civil engineering work ● Fuel supply pump for various vehicles and machinery ● Maintenance for machinery and various facilities ● Bilge pump and emergency equipment for ships and boats ● Rainwater utilization system for households ● Collection of used cooking oil 《As an emergency pump》 ● Can suction up to the 2nd or 3rd floor of a building ● Usable for refueling emergency power supplies on building rooftops ● For transferring toilet water or water tanks in emergencies

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【For water and seawater / Hose nipple specification】 For transferring fuel or water in places without power or during emergencies! Despite being a manual pump, it has excellent suction capability.

◎Emergency water supply pump ◎Easy to operate 《Benefits》 ● Performance of 8m suction (no priming required) and 8m discharge ● Usable in locations without power supply ● Can handle high-viscosity liquids and waste oil 《Features》 ● Made of aluminum ● Handle can be replaced every 90° ● Easy to disassemble and assemble 《Applications》 ● Water supply and drainage pump for emergencies ● Emergency waste liquid pump for facilities such as factories ● Pump for construction and civil engineering work ● Fuel supply pump for various vehicles and machinery ● Maintenance for machinery and various facilities ● Bilge pump and emergency standby equipment for ships and boats ● Rainwater utilization system for households ● Used cooking oil collection

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[Oil, kerosene, light oil, and water / screw connection specification] For transferring fuel or water in places without power or during emergencies! Despite being a manual pump, it has excellent suction capability.

◎Emergency water supply pump ◎Easy to operate 《Benefits》 ●Performance of 5m suction (no priming required) and 7m discharge ●Can be used in locations without power supply ●Can handle high-viscosity liquids and waste oil 《Features》 ●Made of aluminum ●Handle can be replaced every 90° ●Easy to disassemble and assemble 《Applications》 ●Water supply and drainage pump for emergencies ●Emergency waste liquid pump for facilities such as factories ●Pump for construction and civil engineering work ●Fuel supply pump for various vehicles and machinery ●Maintenance for machinery and various facilities ●Bilge pump and emergency standby equipment for ships and boats ●Rainwater utilization system for households ●Used cooking oil collection

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A manual hand diaphragm pump that is ideal for transporting fuel and water in places without power or during emergencies! Despite being a manual pump, it has excellent suction capability.

**HDO Series** HDO-20ALA (For oil, kerosene, light oil, and water / Hose nipple specification) HDO-20(25)ALB (For oil, kerosene, light oil, and water / Screw connection specification) HDO-20ALOZ (For oil, kerosene, light oil, and water / Coupler connection specification) ◎ For emergency water supply pump ◎ Easy to operate **Benefits** ● Performance of 8m suction (no priming required) and 8m discharge ● Usable in locations without power supply ● Can handle high-viscosity liquids and waste oil **Features** ● Made of aluminum ● Handle can be replaced every 90° ● Easy to disassemble and assemble **Applications** ● Water supply and drainage pump for disaster situations ● Emergency waste liquid pump for facilities such as factories ● Pump for construction and civil engineering work ● Fuel supply pump for various vehicles and machinery ● Maintenance for machinery and various facilities ● Bilge and emergency equipment for ships and boats ● Rainwater utilization system for households ● Waste cooking oil collection

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For transporting fuel and water in places without power or during emergencies. Despite being a manual pump, it has excellent suction capability.

**HDO Series** - HDO-20ALA (for oil, kerosene, diesel, and water / hose nipple specification) - HDO-20(25)ALB (for oil, kerosene, diesel, and water / threaded connection specification) - HDO-20ALOZ (for oil, kerosene, diesel, and water / coupler connection specification) - HDO-32(40)ALB (for oil, kerosene, diesel, and water / threaded connection specification) - HDO-20(30P) (for water and seawater / hose nipple specification) - ST-HDOS-32(40)ALB (for oil, kerosene, diesel, and water / threaded connection specification) - KT-HDOS-32(40)ALB (for oil, kerosene, diesel, and water / threaded connection specification) - HDO-50 (for oil, kerosene, diesel, and water / threaded connection specification) ◎ For emergency water supply pump ◎ Easy operation **Benefits** ● Performance of 8m suction (no priming required) and 8m discharge (HDO-32/40ALB has 5m suction and 7m discharge, HDO-50AL has 4m suction and 7m discharge) ● Usable in locations without power supply ● Can handle high-viscosity liquids and waste oil **Features** ● Made of aluminum ● Handle can be replaced every 90° ● Easy to disassemble and assemble

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[Hose Nipple Specification] Usable in various situations from daily water transfer to securing water during disasters! Despite being a manual pump, it has excellent suction capability.

◎Emergency water supply pump ◎Easy to operate 《Benefits》 ● Performance of 8m suction (no priming required) and 8m discharge ● Usable in locations without power supply ● Can handle high-viscosity liquids and waste oil 《Features》 ● Made of aluminum ● Handle can be replaced every 90° ● Easy to disassemble and assemble 《Applications》 ● Water supply and drainage pump for emergencies ● Emergency waste liquid pump for facilities such as factories ● Pump for construction and civil engineering work ● Fuel supply pump for various vehicles and machinery ● Maintenance for machinery and various facilities ● Bilge pump and emergency standby equipment for ships and boats ● Rainwater utilization system for households ● Used cooking oil collection

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As emergency supplies for apartments and municipalities. For replenishing drinking water during disaster emergencies.

**EDO Series** - EDO-40 (for oil, kerosene, light oil, and water / screw connection type) - EDO-50 (for oil, kerosene, light oil, and water / screw connection type) - EDO-50H (for oil, kerosene, light oil, and water / screw connection type) ◎ For emergency water supply pump ◎ Easy to operate ◎ Standing action type **Benefits** ● Maximum discharge of 100L/min ● Powerful liquid transfer with 5m suction, 5m/7m/12m discharge ● Usable in locations without power supply ● Can handle high-viscosity liquids and waste oil ● Allows for work while standing **Features** ● Manual, 100V power supply ● Made of aluminum ● Handle can be replaced every 90° ● Easy to disassemble and assemble

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Ideal for sites where electricity is not available! Air diaphragm pump with stepless adjustment function.

The "ADO Series (ADO-40/ADO-50)" is a safety air-driven air diaphragm pump suitable for construction sites such as tunnel and underground work where electricity cannot be used. It comes with a stepless adjustment feature (air speed controller) and can also be used for disaster response. Additionally, we offer the electric hybrid diaphragm pumps "EDO-40/50" and the hand diaphragm pumps "HDO Series." 【Features】 ■ Stepless adjustment feature ■ Safety air-driven ■ Safe as it does not use electricity, preventing electric leakage ■ Suitable for water suction work in narrow spaces, small holes, and confined areas ■ Can also be used for disaster response *For more details, please refer to the PDF materials or feel free to contact us.

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Kort Valuta Inc. (Head Office: Shibuya, Tokyo; CEO: Hideki Shibata) is pleased to announce that we will hold our next recruitment event, “Kort Valuta Night,” on November 26, 2025. This recurring event offers an opportunity for potential candidates to casually learn about our company culture and team atmosphere before applying. By lowering the barrier to entry and providing authentic insights from current employees, the event helps participants gain a more concrete sense of what it’s like to work at Kort Valuta. Since the event’s launch, approximately ten attendees have gone on to join the company in a range of roles — including marketing, customer support, and backend engineering.

The recognition that "the PDF invoice received from the other party must be stored as electronic data" is widely accepted. However, is that response truly sufficient for perfection? ◆ The "receipt" of electronic transactions includes issuance and delivery The Electronic Bookkeeping Act defines "electronic transactions" as the receipt of electromagnetic records related to transaction information. Breaking down the term "receipt" is key to understanding. - "Receipt": Receiving electronic data such as invoices and receipts from business partners - "Issuance": Issuing and delivering electronic data such as invoices and estimates to business partners When downloading a PDF from your company's accounting system and attaching it to an email, or concluding electronic contracts through a cloud-based invoicing service, both the receiving party and the issuing party (your company) are obligated to store the data. 【Utilizing paperlogic DESKTOP for document management】 - Elimination of manual input - Assurance of reliable searchability - Centralized management of receipt and issuance → paperlogic DESKTOP addresses the challenges of complex metadata management in the storage of these issued documents.

We are pleased to announce that Arsystem Co., Ltd. has received the "Health Management Excellent Corporation 2025" and "Next Bright 1000*" certifications under the Health Management Excellent Corporation Certification System promoted by the Ministry of Economy, Trade and Industry and the Japan Health Conference. *Certified corporations that applied for Bright 500, ranking from 501 to 1500. This year, we are also able to receive the new certification "Next Bright 1000," and we feel happy to have taken another step toward realizing our vision of being "the company that values its employees the most on Earth." Moving forward, we will continue to strive to create a "Love Al" environment where each of our valued employees can work healthily and energetically, both physically and mentally.

Recently, the calculation formula for electric floor heating in the "Energy Consumption Performance Calculation Program" has been significantly revised and was officially released in April. With this release, the introduction of electric floor heating in ZEH homes has become possible. For more details on heating conditions, please refer to the attached flyer. "Energy Consumption Performance Calculation Program" can be found here ▸ https://house.app.lowenergy.jp/#/ If you have any other questions or concerns, please feel free to contact our representative.

Kort Valuta Inc. (Headquarters: Shibuya-ku, Tokyo; President & CEO: Hideki Shibata; hereinafter “the Company”) announces that it has renewed the user interface (UI) of TwooCa, the Company’s digital employee ID with Visa payment functionality.