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1974

1974

03.

Established Daesung Chemical Co. 

1983

1983

06.

KS certifycation​ of Rigid Polyvinyl chloride pipe for water supply (KS M 3402)

10.

KS certifycation of Rigid Polyvinyl chloride pipe for drainage (KS M 3410) 

1984

1984

07.

Established Dury Chemical Co., Ltd.

1986

1986

01.

Obtained KS Display Certication on PVC PIPE (KS M 3401, KS M 3404)

1989

1989

01.

Merger of Daesung Chemical Co. & Dury Chemical Co., Ltd

1997

1997

11.

Relocation of headquarters (Busan)

1998

1998

09.

Obtained New Technology mark (“NT”) on low noise PVC double pipe

1999

1999

04.

Additional KS Certication (VG1) on standard rigied polyvinyl chloride pipe (KS M 3404)

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