SST Association Inc.

Began work on improvement technology, drawing on expertise in small-diameter cast-in-place piles

Began developing a columnar ground improvement method

Developed the SST350 Auger for small-scale buildings

Filed a patent application

Established SST Association Co., Ltd.

Unveiled the technology at the International Trade Center

Obtained a patent

Developed the new SST350A Auger

Entrusted Sompo Japan with defect liability coverage based on the Product Liability Act

Began developing the SST400A Auger for medium-scale building structures

Successfully developed the SST400A Auger

Obtained a patent

Started using the SST400A auger

Obtained GBRC Performance Certification No. 11-06 from the General Building Research Corporation of Japan

Osaka Branch opened

Technology Center opened

Developed the SST500A auger

Obtained revised GBRC Performance Certification No. 11-06 from the General Building Research Corporation of Japan

Developed the SST600A auger

Obtained Disaster Prevention Product Recommendation No. E-0038 from the Disaster Prevention and Safety Association

Tokyo Sales Office opened

Registered with the Ministry of Land, Infrastructure, Transport and Tourism's New Technology Information System (NETIS) for public works and other projects, KT-150002-A

Tohoku Branch opened

Obtained revised GBRC Performance Certification No. 11-06, Revision 2, from the General Building Research Corporation of Japan

Tokyo Sales Office renamed Tokyo Branch

Obtained revised GBRC Performance Certification No. 11-06, Revision 3, from the General Building Research Corporation of Japan

Signed a technical agreement between SST and VJIAT at Vietnam National University of Civil Engineering

Became a group company of Aktio Holdings Co., Ltd. and Sanshin Construction Industry Co., Ltd.

Obtained revised GBRC Performance Certification No. 11-06, Revision 4, from the General Building Research Corporation of Japan

The head office and Technology Center relocated to the same office in Ichihara City

The listing period on the Ministry of Land, Infrastructure, Transport and Tourism's NETIS expired