JNTC to Supply Seagate with HDD Glass Substrates
South Korean glass manufacturer JNTC will supply HDD glass substrates to hard drive maker Seagate. Production at its Vietnam plant is scheduled to begin in the first quarter of next year, with supply ramping up from the second quarter. JNTC has completed construction of a mass-production line at its third plant in Viet Tri, Vietnam. The company has invested approximately 55 billion won in the plant since the end of 2024, converting a facility that made cover glass for wearable devices and automobiles. Its current annual capacity is approximately 120 million to 170 million substrates. JNTC expects the business to begin contributing revenue in the first quarter of next year, adding several hundred billion won in sales annually. It plans to prioritize meeting Seagate’s demand through 2030, then expand to customers such as Western Digital and Toshiba. The article estimates that Japan’s Hoya and JNTC will account for approximately 60% and 40%, respectively, of Seagate’s future glass substrate purchases. JNTC also plans to increase its annual capacity to 400 million to 500 million substrates over the medium to long term.
South Korean glass manufacturer JNTC will supply HDD glass substrates to hard drive maker Seagate. Production at its Vietnam plant is scheduled to begin in the first quarter of next year, with supply ramping up from the second quarter. JNTC has completed construction of a mass-production line at its third plant in Viet Tri, Vietnam. The company has invested approximately 55 billion won in the plant since the end of 2024, converting a facility that made cover glass for wearable devices and automobiles. Its current annual capacity is approximately 120 million to 170 million substrates. JNTC expects the business to begin contributing revenue in the first quarter of next year, adding several hundred billion won in sales annually. It plans to prioritize meeting Seagate’s demand through 2030, then expand to customers such as Western Digital and Toshiba. The article estimates that Japan’s Hoya and JNTC will account for approximately 60% and 40%, respectively, of Seagate’s future glass substrate purchases. JNTC also plans to increase its annual capacity to 400 million to 500 million substrates over the medium to long term.