We have updated the case study collection!

Safe and compact design! pH neutralization treatment device that does not generate secondary pollution.

The "PHG Series" is a pH neutralization treatment device designed to be safe and compact, preventing secondary pollution. It is suitable for alkaline wastewater from ready-mix concrete plants, concrete product factories, as well as crushed stone factories and construction sites. 【Features】 ■ Neutralization method: Carbon dioxide neutralization method ■ Suitable for alkaline wastewater ■ Provides equipment tailored to treatment flow rate, pH value (and whether there are fluctuations), and temperature based on the characteristics of the raw water ■ Optional pH abnormality alarm (buzzer and patrol light) is also available *For more details, please refer to the PDF materials or feel free to contact us.

• Water treatment equipment
• Wastewater/wastewater treatment equipment

Compactly unitized! An automatic pH neutralization system capable of continuous unmanned operation for 24 hours.

The "PHU Series" is a continuous automatic neutralization treatment system suitable for various factory wastewater, ready-mixed concrete plants, and civil engineering factories. It is compactly designed, making it easy to install in various locations, and it can operate continuously and unattended for 24 hours. Additionally, by changing the materials, it can handle both acidic and alkaline wastewater. This new unit has been thoroughly designed to reduce costs. 【Features】 ■ Compact design allows for easy installation in various locations ■ Capable of continuous unattended operation for 24 hours ■ Can handle both acidic and alkaline wastewater by changing materials (Materials for acidic wastewater neutralization tank and recording tank: FRP/L) *For more details, please refer to the PDF document or feel free to contact us.

• Other process controls
• Water treatment equipment
• Filtration Equipment

A 24-hour unmanned pH neutralization system that contributes to labor cost reduction and efficiency! It can handle both acidic and alkaline wastewater, allowing for thorough cost reduction.

【1 Chemical Injection Method PHU Series】 This is a continuous automatic neutralization device suitable for various factory wastewater, ready-mixed concrete plants, and civil engineering sites. It is compactly designed, making it easy to install in various locations, and can operate continuously and unattended for 24 hours. Additionally, by changing the materials, it can handle both acidic and alkaline wastewater. This new unit has been thoroughly designed to reduce costs. ■ Injects chemicals according to the treated water, allowing for efficient operation and reduced running costs. ■ Its compact design makes it easy to install in various locations. ■ Capable of 24-hour continuous unattended operation. ■ Can handle both acidic and alkaline wastewater by changing materials. (Materials for acidic wastewater neutralization tank and recording tank: FRP/L) 【2. Carbon Dioxide Injection Method PHG Series】 Wastewater treatment device using carbon dioxide injection. ■ Compact design makes it effective on construction sites. ■ Neutralization reaction time is quick, preventing abnormal pH changes due to excessive injection. *For more details, please refer to the PDF document or feel free to contact us.

• Other process controls
• Water treatment equipment
• Filtration Equipment

Custom tanks can also be manufactured! Chemical solution tanks used in chemical equipment.

This product is a chemical tank that is easier to process compared to PE tanks. As a result, it is used in various scenes and is overwhelmingly adopted in the chemical equipment sector. We also accept custom tank production according to various requests. 【Features】 ■ Easy to process ■ Overwhelmingly adopted in the chemical equipment sector ■ Custom tank production according to various requests is also possible *For more details, please refer to the PDF materials or feel free to contact us.

• tank

Ideal for the injection, stirring, and dissolution of pharmaceuticals! We will select according to your application.

The "PE Tank" is a chemical tank that can be used for various chemicals. We also offer types that are compatible with high density and have excellent chemical resistance. We will select according to your application. Options such as drain pans, pump stands, and locks are also available. 【Features】 ■ Standard equipped with a liquid level gauge for easy confirmation of liquid volume (with float ball) ■ The PVC cover on the top can be processed for the installation of mixers and pumps ■ Can be securely fixed with anchor brackets ■ Its rectangular shape achieves space-saving compared to cylindrical tanks of the same capacity *For more details, please refer to the PDF materials or feel free to contact us.

• tank

As the new year begins, I would like to extend my heartfelt congratulations on your continued prosperity. I sincerely appreciate your exceptional support throughout the year. This is the STJ Group (Santelecom Japan, STJ Rentec). Now, I am pleased to announce that we will be opening our "Transceiver & Smartphone Rental Shop" simultaneously at three locations nationwide on January 26 (Monday)! ■ List of Services to be Offered - Same-day pickup/return of rental equipment - Usage explanations and demonstrations of rental equipment - Wireless solutions consultation desk - Mobile BPO service counter As a special promotion to celebrate the opening of the rental shop, we are currently running a special price campaign for picking up rental equipment at the shop! For more details, please contact us!

【Notice of Year-End and New Year Holidays】 Thank you very much for your continued support. Our company will be closed for the year-end and New Year holidays as follows: Holiday Period: Saturday, December 27, 2025 – Sunday, January 4, 2026 Please note that inquiries and orders received during the holiday period will be addressed sequentially starting from Monday, January 5, 2026. We apologize for any inconvenience this may cause and appreciate your understanding.

We would like to inform you about our participation in the IT Trend EXPO 2026 Spring. 《Exhibition Information》 With the concept of "New encounters will change tomorrow's work," one of the largest online exhibitions in the industry will be held. NTT TechnoCross will exhibit in the Human Resources Comprehensive category. We have prepared numerous discussions and sessions featuring special guests who are active on television, allowing even those who are usually busy to efficiently gather information on products and services related to IT and DX. Additionally, the first 10,000 participants will receive a 500 yen Amazon gift card. Please apply early. 《Exhibition Overview》 March 3 (Tuesday) to March 7 (Saturday), 2026, online (free: pre-registration required) 《Participation Application》 https://it.expo.it-trend.jp/key/opl7kgdj *Please apply (free) from the "Receive Ticket / Proceed to Participation Registration" link at the above URL.

The TV commercial "What Will You Do in the New Era?" featuring model and actress Akane Horita will begin airing on December 26, 2025. This work expresses the desire of Tokei Densan to respond to the diverse needs of various industries in today's society, where new technologies, such as the expansion of the AI market, are competing with each other, and to nurture and blossom our customers' futures. Please pay attention to Akane Horita, who is dressed in stylish outfits, listening to the concerns of the target audience and offering support. # CM Overview Title: "What Will You Do in the New Era?" (30 seconds / 15 seconds) CM URLs 30 seconds: https://youtu.be/y_lMs0HRj3w 15 seconds: https://youtu.be/egpzMfh8Kok

Thank you very much for your continued support. We would like to inform you that our company will be closed for the year-end and New Year holidays as follows: Year-end and New Year holiday period: December 27, 2025 (Saturday) to January 4, 2026 (Sunday) We apologize for any inconvenience this may cause and appreciate your understanding. *Please note that inquiries made through our website will also be responded to after January 5, 2026 (Monday).