How to Use Electronic Contracts: A Comprehensive Guide from Basics to Implementation in 5 Steps

Compliant with all construction-related laws and regulations! The digitization of documents is completed with just this one solution!

<Three Benefits of Implementation> 1. No need for multiple services! The digitization of construction documents is completed with this one service. This service is the only "all-in-one" solution that can digitize all transaction documents generated daily in the construction industry, including electronic contracts for agreements, order forms, acceptance letters, and estimates. There is no longer a need to use separate services for different purposes, allowing for unified digital document management. Of course, it fully complies with various laws related to the generation, delivery/receipt, and storage of each document, such as the Construction Business Act and the Electronic Bookkeeping Act. 2. Automatic saving frees you from the hassle of lost documents and searching for them. Documents are automatically saved to the electronic archive simply by sending them, eliminating the need to search for paper or PDFs. The patented automatic saving function via email and the collaboration feature that saves documents simultaneously for both the main contractor and subcontractors significantly streamline daily document management. 3. Zero stamp duty! Achieve significant cost reduction. By implementing this service, you can greatly reduce various costs such as stamp duty for contracts, mailing expenses, and labor costs associated with printing, stuffing, and managing documents. Main contractors (with annual sales of 500 million yen) can save approximately 1.16 million yen annually, while subcontractors (with annual sales of 50 million yen) can save about 240,000 yen annually. (Our estimation)

• ERP (core system)
• Electronic document system
• Accounting Management System

Fully compliant with various laws and regulations. Document digitization is completed with this one solution! And it's only 20,000 yen per month!

<Three Reasons to Choose Us> 1. Supports all legally required documents and centralizes operations Not only for electronic contracts, but also for electronic delivery of various documents such as invoices, estimates, and delivery slips, as well as internal signatures for important documents like board meeting minutes. This all-in-one service allows you to digitize all legally required documents with just this one solution. You can be freed from the hassle of using different services for each document and unify your internal digital document management. Of course, it fully complies with various laws, including the Electronic Bookkeeping Act. 2. No pay-per-use fees! One of the lowest fixed rates in the industry While typical digitization services charge based on the number of documents, our service offers a fixed monthly fee of 20,000 yen (excluding tax) with no pay-per-use fees. You can use electronic signatures and timestamps as much as you want, making it very affordable. 3. JIIMA certification obtained. Meets the technical standards set by the government Our service has obtained two certifications from JIIMA. Additionally, we have received confirmation of compliance from the Ministry of Economy, Trade and Industry and the Ministry of Land, Infrastructure, Transport and Tourism, and a response from the Digital Agency stating that it is "available for use by national and local governments," ensuring reliable and secure usage.

• ERP (core system)
• Electronic document system
• Accounting Management System

Fully compliant with various laws and regulations, document digitization is completed with just this one solution! And it's only 20,000 yen per month!

<Three Reasons to Choose Us> 1. Supports all legally required documents and centralizes operations Not only for electronic contracts but also for electronic delivery of various documents such as invoices, estimates, and delivery slips, as well as internal signatures for important documents like board meeting minutes. This all-in-one service allows you to digitize all legally required documents with just this one solution. You can be freed from the hassle of using different services for each type of document and unify your internal digital document management. Of course, it fully complies with various laws, including the Electronic Bookkeeping Act. 2. No pay-per-use fees! One of the lowest fixed rates in the industry While most electronic services charge based on the number of documents, our service offers a fixed monthly fee of 20,000 yen (excluding tax) with no pay-per-use fees. You can use electronic signatures and timestamps as much as you want, making it very affordable. 3. JIIMA certification obtained. Meets the technical standards set by the government Our service has obtained two certifications from JIIMA. Furthermore, we have received confirmation of compliance from the Ministry of Economy, Trade and Industry and the Ministry of Land, Infrastructure, Transport and Tourism, and a response from the Digital Agency stating that it is "available for use by national and local governments," allowing you to use it with confidence based on its proven reliability.

• ERP (core system)
• Document Management System
• Database

Fully compliant with various laws and regulations, document digitization is completed with just this one solution! And it's only 20,000 yen per month!

<Three Reasons to Choose Us> 1. Supports all legally required documents and centralizes operations Not only for electronic contracts, but also for electronic delivery of various documents such as invoices, estimates, and delivery slips, as well as internal signatures for important documents like board meeting minutes. This all-in-one service allows you to digitize all legally required documents with just this one solution. You can be freed from the hassle of using different services for each document and unify your internal digital document management. Of course, it fully complies with various laws, including the Electronic Bookkeeping Act. 2. No pay-per-use fees! One of the lowest fixed rates in the industry While typical digitization services charge based on the number of documents, our service offers a fixed monthly fee of 20,000 yen (excluding tax) with no pay-per-use fees. You can use electronic signatures and timestamps as much as you like, making it very affordable. 3. JIIMA certification obtained. Meets the technical standards set by the government Our service has obtained two certifications from JIIMA. Additionally, we have received confirmation of compliance from the Ministry of Economy, Trade and Industry and the Ministry of Land, Infrastructure, Transport and Tourism, and a response from the Digital Agency stating that it is "available for use by national and local governments," allowing you to use it with confidence based on its proven reliability.

• Other Software

Compliant with all construction-related laws and regulations! Document digitization is completed with just this one solution!

<Three Benefits of Implementation> 1. No need for multiple services! The digitization of construction documents is completed with this one service. This service is the only "all-in-one" solution that can collectively digitize all transaction documents that occur daily in the construction industry, including electronic contracts for agreements, orders, acceptance letters, and estimates. There is no need to use separate services for different purposes, allowing for unified digital document management. Of course, it fully complies with various laws related to the generation, delivery/receipt, and storage of each document, such as the Construction Business Act and the Electronic Bookkeeping Act. 2. Automatic saving frees you from the hassle of lost documents and searching. Documents are automatically saved to the electronic archive just by sending them, eliminating the need to search for paper or PDFs. The patented automatic saving function via email and the collaboration feature that simultaneously saves documents for both the main contractor and subcontractors significantly streamline daily document management. 3. Zero stamp duty! Achieve significant cost reduction. By implementing this service, you can greatly reduce various costs associated with contract stamp duties, mailing expenses, printing, stuffing, and management labor costs. Main contractors (with annual sales of 500 million yen) can save approximately 1.16 million yen annually, while subcontractors (with annual sales of 50 million yen) can save about 240,000 yen annually. (Our estimate)

• ERP (core system)
• Document Management System
• Database

Compatible with all construction-related laws and regulations! The digitization of documents is completed with just this one!

<Three Benefits of Implementation> 1. No need for multiple services! The digitization of construction documents is completed with this one service. This service is the only "all-in-one" solution that allows for the electronic digitization of all transaction documents that occur daily in the construction industry, including not only electronic contracts but also purchase orders, acceptance letters, and estimates. There is no need to use separate services for different purposes, allowing for unified digital document management. Of course, it fully complies with various laws related to the generation, delivery/receipt, and storage of each document, such as the Construction Business Act and the Electronic Bookkeeping Act. 2. Automatic saving frees you from the hassle of lost documents and searching. Documents are automatically saved to the electronic archive simply by sending them, eliminating the need to search for paper or PDFs. The patented automatic saving feature via email and the collaboration feature that saves documents simultaneously for both the main contractor and subcontractors significantly streamline daily document management. 3. Zero stamp duty! Achieve significant cost reduction. By implementing this service, you can greatly reduce various costs, including stamp duty for contracts, mailing costs, and labor costs associated with printing, sealing, and managing documents. Main contractors (with annual sales of 500 million yen) can save approximately 1.16 million yen annually, while subcontractors (with annual sales of 50 million yen) can save about 240,000 yen annually. (Our estimation)

• Other Software

Have you already addressed the compliance with the revised Construction Industry Law that will be fully implemented on December 12?

【Breaking News (As of November 14, 2025)】 The revised Construction Business Act will be fully enforced on December 12, 2025, as decided by the Cabinet. This will result in stricter transaction terms between prime contractors and subcontractors. For example: - Prohibition of unilateral price orders from prime contractors - Agreement on construction period and amount is required - Notification of risk information from subcontractors To comply with these changes, it is necessary to document each item in writing. However, this will inevitably lead to the following situations: - Increased opportunities to exchange contracts - Increased number of documents requiring stamp duty - More documents will need to be issued, complicating management Under this revision, clients who violate the rules will face recommendations and public disclosure. The public announcement of company names poses a credit risk to management, making it impossible to avoid impacts on business operations. Therefore, the following actions are strongly required: - Promote digitization/DX of documents ⇒ Reduce management burdens, improve operational efficiency, and cut costs such as stamp duty and labor expenses - Fully comply with legal requirements related to electronic storage, such as the Construction Business Act and the Electronic Bookkeeping Preservation Act, for each document ⇒ Ensure legal compliance, internal controls, and thorough responses to various audits.

• ERP (core system)
• Electronic document system
• Accounting Management System

Have you already addressed the compliance with the revised Construction Business Act, which will be fully implemented on December 12?

【Breaking News (as of November 14, 2025)】 The revised Construction Business Act will be fully enforced on December 12, 2025, as decided by the Cabinet. This will result in stricter transaction terms between prime contractors and subcontractors. For example: - Prohibition of unilateral price orders from prime contractors - Agreement on construction period and amount is required - Notification of risk information from subcontractors To comply with these changes, it is necessary to document each item in writing. However, this will inevitably lead to the following situations: - Increased opportunities to exchange contracts - Increased documents requiring stamp duty - More documents to be issued, leading to complicated management Under this revision, violators among ordering parties will face recommendations and public announcements. The public disclosure of company names poses a credit risk to management, making it impossible to avoid impacts on business operations. Therefore, the following measures are strongly required: ■ Promote digitization/DX of documents ⇒ Reduce management burdens and improve operational efficiency, cut costs such as stamp duty and labor expenses ■ Fully comply with legal requirements related to electronic storage, such as the Construction Business Act and the Electronic Bookkeeping Preservation Act, for each document ⇒ Ensure legal compliance, internal control, and thorough responses to various audits

• Other Software
• ERP (core system)
• Document Management System

Have you already addressed the compliance with the revised Construction Industry Law that will be fully implemented on December 12?

【Breaking News (as of November 14, 2025)】 The revised Construction Business Act will be fully enforced on December 12, 2025, as decided by the Cabinet. This will result in stricter transaction terms between general contractors and subcontractors. For example: - Prohibition of unilateral price orders from general contractors - Agreement on construction period and amount is required - Notification of risk information from subcontractors To comply with these changes, it is necessary to document each item in writing. However, this will inevitably lead to the following situations: - Increased opportunities to exchange contracts - More documents requiring stamp duty - Increased issuance of various documents, leading to complicated management Under this revision, clients who violate the rules will face recommendations and public announcements. The public disclosure of company names poses a credit risk to management, making it impossible to avoid impacts on business operations. Therefore, the following actions are strongly required: - Promote the digitization/DX of documents ⇒ Reduce management burdens and improve operational efficiency, as well as cut costs such as stamp duty and labor expenses - Fully comply with legal requirements related to electronic storage, such as the Construction Business Act and the Electronic Bookkeeping Preservation Act, for each document ⇒ Ensure compliance with laws, internal controls, and thorough responses to various audits.

• Other Software

[To the owners of parking lots and parking lot construction companies] "I am worried about the possibility of colliding with pedestrians when exiting the parking lot..." Among vehicle entrances to parking lots, stores, residences, and factories, those particularly facing sidewalks or roadways are expected to pose risks of dangerous incidents such as pedestrian collisions and vehicle-to-vehicle accidents. To alleviate such concerns, Hotron proposes a [Vehicle Exit Warning Sensor] that detects vehicle departures at various sites and alerts the surrounding area with LED lights and buzzers. The system consists of a simple configuration of "Sensor" + "Controller" + "Switching Power Supply (24V)" + "LED Rotating Light." *When using the exit warning system, we kindly ask that you arrange for the switching power supply (24V), LED rotating light, control panel, circuit breaker, etc. Since it can be retrofitted, it can also be used for existing parking lot entrances. [Contents Included] ○ Exit Warning System Configuration ○ Comparison Table of Exit Warning Sensors ○ Four Modes ○ Wide Range of Applications ○ Customer Feedback ○ Appearance Diagram / Specifications ◎ For more details, please contact us or download the catalog.

In recent times, there has been a growing interest in infection control measures and facility hygiene management. Our company offers non-contact sensor products that are recommended for commercial facilities, food factories, and nursing and caregiving facilities. 【Sensors for Automatic Doors】 ● Light Touch Sensor HA-T401 … When you wave your hand in front of the automatic door, the sensor detects the movement and opens or closes the door. This is recommended for making doors with touch switches non-contact. ● Hand Wave Sensor PF-R5, PF-U2, DHS-1 … Opens and closes the automatic door by waving your hand in front of the sensor. ● Foot Switch PF-01S/01D/03S/05 … Opens and closes the automatic door by placing your foot in the opening. 【Access Control System】 ● Face Recognition + Unmanned Temperature Measurement DS Series … Allows for face recognition along with mask detection and body temperature measurement simultaneously. ● Automatic Disinfectant Spray Dispenser PHW-03B … Automatically sprays disinfectant when you wave your hand in front of the sensor. 【Nursing and Care Sensors】 ● Infrared Bed Exit Sensor "Just Place It Pole-kun" … This bed exit sensor is installed next to the bed and notifies via nurse call when the subject enters the detection range. ◎ For more details, please download the catalog or contact us.

Japan is one of the top 10 countries in the world with frequent earthquakes. The 2020 White Paper on Land, Infrastructure, Transport and Tourism has also reported an increase in the probability of major earthquakes occurring. Regarding the Nankai Trough earthquake, the probability of an earthquake with a magnitude of 8 to 9 occurring within the next 30 years is estimated to be 70 to 80%. At Hotron, we recommend the introduction of seismic devices for earthquake countermeasures in buildings and equipment. The seismic device 'HK-2' is a product that automatically performs various controls that have been pre-set when it detects strong shaking equivalent to a seismic intensity of 5 lower or higher. For example, it can automatically execute actions such as: "Open automatic doors and gates to secure evacuation routes and access for emergency vehicles" "Transmit signals to the control room and stop facility equipment" "Unlock the keys to locked lockers" "Automatically play voice guidance" For more details, please download the materials or contact us.

Do you have any concerns or requests regarding wired bed exit sensors? × Tangling or tripping over wired cables × Cable disconnection or damage × Worrying about forgetting to turn the switch back on after temporarily stopping the sensor. × Wanting to be notified of bed exits even from a location far from the nurse call outlet. Such concerns can be resolved simply by connecting our wireless nurse call linked set to the sensor! Our wireless nurse call linked set allows you to connect bed exit sensors like "Ugo-kun," "Foldable Thin Matta-kun," "Ayumi-chan," and "Just Place Pole-kun" to transmitters and receivers, reducing wiring around the bed area, alleviating concerns about tripping or falling due to cables, and contributing to a tidier work environment. Furthermore, it enables the use of bed exit sensors even from locations far from the nurse call outlet, allowing for more flexible equipment placement.

We will be exhibiting at Offshore Tech Japan (Marine Industry Technology Exhibition 2026) (Booth Number: 1S-S06). In this exhibition, we will introduce our services utilizing marine robots such as autonomous surface vehicles (ASVs) and underwater drones for marine surveys, seagrass bed surveys, ocean and wind condition surveys related to offshore wind power, and the collection of dead fish in aquaculture operations. Event Dates: January 28 (Wednesday) to January 30 (Friday), 2026 Location: Tokyo International Exhibition Center "Tokyo Big Sight," South Exhibition Hall, South 1 Hall (Koto City, Tokyo)