About Us

Building trust since 1988.

"Small but Strong, Fearlessly Challenging"

Established in December 1988, YoonSung Co., Ltd. specialized in researching and developing full automatic paper tube manufacturing equipment, exporting approximately 1,000 units to Taiwan, Turkey, Japan, and other countries. In November 1993, we were honored with the 1 Million Dollar Export Award at the 30th Trade Day.

Since 2003, leveraging internationally certified technology, we have directly manufactured and sold paper packaging products, delivering perfect quality and service to domestic and international customers alike.

Under our motto "Small but Strong, Fearlessly Challenging," we pledge to become the best in the paper and eco-friendly industry. We deeply thank all domestic and international customers for their continued support.

Key Milestones

1988
Established YoonSung Co., Ltd.
1992.04
Began exporting full automatic paper cone machines
1993
Converted to corporation
1993.11
Awarded the 1 Million Dollar Export Award (30th Trade Day)
1994.10
Relocated headquarters & factory
1995.10
4th Top Management Award – Creative Category (Suwon Univ.)
1999.01
Designated as Technology Competitive Excellence Company (SMBA)
2001.12
Minister of Trade, Industry and Energy Commendation
2003.01
Began manufacturing Paper Pallets
2010
Established joint venture – Shanghai YoonSung Paper Co., Ltd.
2017.01
Established Bongdam Branch (Hwaseong-si)
2019.05
Relocated Bongdam Branch to Jinwi-ro, Pyeongtaek-si
2022.10
Established Godeok Branch (Pyeongtaek-si)
2023.05
Established Daeho Paper Tube Branch (Namyang, Hwaseong-si)
2025
Obtained ISO 9001 · 14001 · 45001 & FSC Certifications
2026.01
Registered 'PaperCastle' Trademark

International Certifications

ISO 9001:2015
Quality Management System
ISO 14001:2015
Environmental Management System
ISO 45001:2018
OH&S Management System
FSC Certified
Chain of Custody (FSC® C208990)

Quality First

Uncompromising quality in every product.

Constant Innovation

We innovate with a fearless challenging spirit.

Customer Trust

Customer trust is our highest priority.