| 1804 |
Kumanoya Heishiro came to Osaka from Toyama and founded Kumanoya, a shop of paints, dye's weed, and brushs/inks in Semba. |
| 1804 |
1805年(文化2年)に染料問屋を営むのが始まりです。 |
| 1872 |
Kumanoya was renamed into Ichirobei Yamada Shop. |
| 1872 |
熊野屋改め山田市郎兵衛商店を構う |
| 1875 |
Started also the sales of dyes, industrial goods, clays, and oils and fats. |
| 1875 |
染料・工業品・クレー・油脂類の販売も始める |
| 1876 |
Started cotton trade with former British India, Annam (current Viet-Nam) and Dutch East India (current Indonesia and Malacca). |
| 1876 |
旧英領インド・安南、和蘭領インドと綿花貿易を開始 |
| 1912 |
Ichirobei Yamada Shop was reorganized into Yamada General Ppartnership Company. |
| 1912 |
山田合名会社に改組 |
| 1917 |
The Yamada Shoten Corporation was establised. Capital of JPY 1 million. |
| 1917 |
株式会社山田商店設立 資本金100万円 |
| 1924 |
Ichijiro Yamada was appointed as president. |
| 1924 |
Yamada Shoten Corporation became general distributor of I.G. Dyestuff Industries (Germany) in Japan. |
| 1924 |
山田市治郎 社長就任 I.G.染料会社(独)の日本総代理店となる |
| 1927 |
Became an exclusive distributor of Japan Dyestuffs Manufacturing Co. (Current Sumitomo Chemical Company Ltd.) |
| 1927 |
日本染料製造株式会社(現：住友化学株式会社)の特約代理店となる |
| 1928 |
Became an exclusive distributor of Edogawa Kogyosho limited partnership company (current Mitsubishi Gas Chemical Company, Inc.) |
| 1928 |
Became an exclusive distributor of DKS Co. Ltd. |
| 1928 |
合資会社江戸川工業所(現 三菱ガス化学株式会社)の特約代理店となる 第一工業製薬株式会社の特約代理店となる |
| 1930 |
Kishitaro Yamada was appointed as president. |
| 1930 |
山田岸太郎 社長就任 |
| 1931 |
Became an exclusive distributor of Asahi Glass Co., Ltd. (current AGC Inc.) |
| 1931 |
旭硝子株式会社（現：ＡＧＣ株式会社）の特約代理店となる |
| 1944 |
Following the consolidation of Japan Dyestuffs Manufacturing Co. and Sumitomo Chemical Industies Co. Ltd. (current Sumitomo Chemical Co., Ltd.), Yamada Shoten Corporation became an exclusive distributor of Sumitomo Chemical Industies Co. Ltd. |
| 1944 |
日本染料製造株式会社と住友化学工業株式会社（現：住友化学株式会社）との合併に伴い、住友化学工業株式会社の特約代理店となる |
| 1947 |
Ichiro Yamada was appounted as president. |
| 1947 |
山田市郎 社長就任 |
| 1965 |
Seiho Building completed. |
| 1965 |
「西邦ビルディング」竣工 名称の由来は横堀川にかかる西国橋(西国交易の拠点だった)が近くにあったことから「国」を「邦」とした 西国橋 大阪市立図書館蔵 |
| 1970 |
Tokyo Branch opened |
| 1970 |
東京支店開設 |
| 1971 |
Following the consolidation of Mitsubishi Edogawa Chemical Company, Ltd. and Japan Gas Chemical Industry Co., Seiho became an exclusive distributor of Mitsubishi Gas Chemical Company, Inc. |
| 1971 |
三菱江戸川化学株式会社と日本ガス化学工業株式会社との合併に伴い、三菱ガス化学株式会社の特約代理店となる |
| 1973 |
Capital increased to JPY 10 million |
| 1973 |
資本金を1000万円へ増資 |
| 1974 |
Company name was changed into Seiho Ltd. |
| 1974 |
商号を西邦産業株式会社に改称 |
| 1985 |
Ichio Yamada was appointed as president. |
| 1985 |
山田市雄 社長就任 |
| 1994 |
Became an exclusive distributor of Mitsubishi Engineering-Plastics Corporation |
| 1994 |
三菱エンジニアリングプラスチックス株式会社の特約代理店となる |
| 1997 |
Capital increased to JPY 30M |
| 1997 |
資本金3000万円へ増資 |
| 2000 |
Capital increased to JPY 50M |
| 2000 |
資本金5000万円へ増資 |
| 2005 |
Celebretion Party for 200th anniversary of the company's foundation was held. |
| 2005 |
創業200周年・感謝の宴 開催 |
| 2006 |
Jun Takekoshi was appointed as president. |
| 2006 |
竹腰 純 社長就任。 |
| 2009 |
Katsuhisa Yamada was appointed as president |
| 2009 |
山田 雄久 社長就任 |
| 2010 |
Became the general distributor of DEZA, a.s. (Czech Republic) in Japan |
| 2010 |
ＤＥＺＡ，ａ.ｓ.社（チェコ）の日本総代理店となる |
| 2013 |
Became the general distributor of PRECHEZA, a.s. (Czech Republic) in Japan |
| 2013 |
ＰＲＥＣＨＥＺＡ，ａ.ｓ.社（チェコ）の日本総代理店となる |
| 2016 |
Seiho was acknowledged as “Business Innovation Plan Approved Enterprise”. |
| 2016 |
経営革新計画承認企業に認定 |
| 2022 |
Seiho was acknowledged as “Business Innovation Plan Approved Enterprise” second time. |
| 2022 |
2度目の経営革新計画承認企業に認定 |
