CASTEM List of News Articles

Castem Co., Ltd. will exhibit at the first domestic specialized exhibition for casting-related products and services, "Foundry Tech + Expo 2026," which will be held at Tokyo Big Sight from September 9 (Wednesday) to September 11 (Friday), 2026. We will provide proposals tailored to our customers' challenges from the perspective of "method conversion through three casting methods," addressing familiar issues in manufacturing such as reviewing component costs, improving design flexibility, and accommodating small lot procurement. At our booth, we will conduct casting demonstrations that have received positive feedback each time, as well as display works that have won the grand prize at international casting contests. You will be able to see the potential of casting technology through actual items. We hope to present content that will be of interest to a wide range of departments, including design, development, procurement, and production technology. If you have any concerns regarding components, please consult the "Component Inquiry" at the Castem booth. Exhibition Name: Foundry Tech + Expo 2026 Dates: September 9 (Wednesday) to September 11 (Friday), 2026, 10:00 AM to 5:00 PM (until 4:30 PM on the final day) Venue: Tokyo Big Sight (3-11-1 Ariake, Koto-ku, Tokyo) Exhibition Booth Number: South Hall 4, B011

Thank you very much for your continued patronage. We apologize for the inconvenience, but we will be closed during the following period. 【Closure Period】 From Saturday, August 8, 2026, to Sunday, August 16, 2026. Inquiries received during the closure period will be addressed sequentially starting from Monday, August 17. We apologize for any inconvenience this may cause during the period and appreciate your understanding. *Orders placed on various online shopping sites will still be accepted during the closure period. *Shipping of products and responses to inquiries will begin after Monday, August 17.

Castem will be exhibiting at the "Monozukuri World Tokyo - Mechanical Components Technology Exhibition" held at Tokyo Big Sight from July 1 (Wednesday) to July 3 (Friday), 2026. 【Exhibition Information】 Monozukuri World Tokyo - Mechanical Components Technology Exhibition Dates: July 1 (Wednesday) to July 3 (Friday), 2026, 10:00 AM to 5:00 PM Venue: Tokyo Big Sight (3-11-1 Ariake, Koto-ku, Tokyo) Booth Number: East Exhibition Hall E18-1 【Exhibition Highlights】 - Presentation of our casting service "Digital Cast," which allows for production from a single piece without the need for molds. - Display of "Try and Make Molds," which enables prototype production with MIM at a mold cost of 190,000 yen. - Showcase of A6061/A7075 aluminum castings that achieve high strength and lightweight design. We will also conduct a casting demonstration that has received positive feedback each time. Attendees will receive a novelty item cast with a low melting point alloy that "melts in hot water" as a gift on the spot. The content is designed to be of interest to those in charge of design, development, procurement, and production technology. We invite you to visit the Castem booth.

Castem Co., Ltd. will hold a free webinar on June 25 (Thursday) and June 29 (Monday) for new and mid-career employees who have joined the manufacturing industry, focusing on the basics of metal processing. In this seminar, we will explain representative metal processing methods such as cutting, sheet metal processing, welding, and casting (sand casting, die casting, lost wax) in an easy-to-understand manner, avoiding technical jargon as much as possible, making it accessible for those who are new to the manufacturing industry. ■ Date and Time 【Session 1】 June 25 (Thursday) 15:00 - 16:00 https://events.teams.microsoft.com/event/ba74cae1-f1e4-48aa-a5c4-668ff079ffe7@f2151f36-589f-4fcf-a7e6-1e6e45532107 【Session 2】 June 29 (Monday) 15:00 - 16:00 https://events.teams.microsoft.com/event/2cca063b-c05c-4772-b0ab-ca5a7310fde4@f2151f36-589f-4fcf-a7e6-1e6e45532107 ■ Format Online event

We will be exhibiting at the "3rd SPEXA International Space Business Exhibition" held at Tokyo Big Sight from May 27 (Wednesday) to May 29 (Friday), 2026. At this exhibition, we will introduce our precision casting and MIM (Metal Injection Molding) technologies, which cater to high-performance and difficult-to-machine materials such as A7075 super duralumin, Inconel, and titanium. "We want to reduce material costs." "We want to lower the machining costs of difficult-to-machine materials." "We are looking for a manufacturer for small quantity parts." In response to these challenges, Castem offers component manufacturing solutions utilizing casting and MIM technologies. We can accommodate everything from small-scale prototypes to small-lot repeat production. Please feel free to consult with us at the venue. 【Exhibition Overview】 Exhibition: 3rd SPEXA International Space Business Exhibition Dates: May 27 (Wednesday) to May 29 (Friday), 2026, 10:00 AM to 5:00 PM Venue: Tokyo Big Sight, South Exhibition Hall S6-2 (3-11-1 Ariake, Koto-ku, Tokyo) URL: https://www.spexa.jp/tokyo/ja-jp.html

Thank you very much for your continued patronage. We apologize for the inconvenience, but we will be closed during the following period. 【Closure Period】 From Wednesday, April 29, 2026, to Wednesday, May 6, 2026. Inquiries received during the closure period will be addressed sequentially starting from Thursday, May 7, 2026. We apologize for any inconvenience this may cause during this period and appreciate your understanding. *Orders placed on various online shopping sites will still be accepted during the closure period. *Shipping of products and responses to inquiries will begin after Thursday, May 7, 2026.

The "Monozukuri World Nagoya" will be held at Port Messe Nagoya from April 8 (Wednesday) to April 10 (Friday), 2026, where we will exhibit simultaneously at the "Mechanical Components Technology Exhibition" and the "Next Generation 3D Printer Exhibition." "We have high cutting costs for complex shapes," and "We cannot decide on mass production methods after prototyping"... We will showcase optimal solutions for customers troubled by prototyping and mass production of metal parts. If you are struggling with selecting methods for mass-produced items or reducing costs, please visit the "Mechanical Components Technology Exhibition." If you are having difficulties with single-item or one-off production, please come to the "Next Generation 3D Printer Exhibition." We sincerely look forward to your visit. 【Exhibition Overview】 ■ Event Name: Monozukuri World Nagoya ■ Dates: April 8 (Wednesday) to April 10 (Friday), 2026, 10:00 AM to 5:00 PM ■ Venue: Port Messe Nagoya (2-2 Kinjo-futo, Minato Ward, Nagoya) ■ Exhibition Content and Booth Numbers: Lost wax precision casting, MIM (casting demonstrations included) ➔ Mechanical Components Technology Exhibition… Hall 1, Booth 7-9 Mold-less casting digital cast ➔ Next Generation 3D Printer Exhibition… Hall 1, Booth 12-10

Castem Co., Ltd. and Castem Global Group's Castem Vietnam held the completion ceremony for the newly established factory in Quang Ninh Province, Northern Vietnam, in January 2026. This is the first expansion into Vietnam for our group, and this factory will be our seventh overseas production base. Following the planned second phase of construction, it is expected to become the largest production base in the group in the future. The factory will manufacture lost-wax precision casting parts used in semiconductors, precision machinery, and construction machinery. We chose Vietnam, where economic growth is anticipated, as a new production base for our main business of lost-wax precision casting. Currently, we are advancing with prototypes and plan to start mass production by the end of May 2026. Once the second phase of construction is completed by the end of 2028, we will ultimately be able to produce one million units per month (with a product shipment weight of approximately 120 tons/month). On the day of the ceremony, about 100 participants, including business partners and local stakeholders, attended and toured the various processes such as mold making, casting, and machining. Although we are starting with a compact system in terms of equipment and personnel, we will continue to take on challenges and advance our business to a new dimension.