| ▼ | Nov. 1947—HIROSHIMA manufacturing established |
| ▼ | Feb. 1950--HIROSHIMA metal industry co., LTD. Was founded with a fund of 500,000 yen |
| ▼ | Sep. 1962--Osaka factory opened |
| ▼ | Jun. 1975—BL metal cap developed successfully and no sealing glue products were borned |
| ▼ | Apr. 1977—Independent for sales department, start business activities of Hiroshima commercial co.,ltd |
| ▼ | Mar. 1979—BR sealing was developed successfully |
| ▼ | May 1985—BG sealing in iron tab was developed, excellent packaging function to prevent the tank filler replacement fill |
| ▼ | Nov. 1988—Established Chiba branch |
| ▼ | Jan. 1989—Finished headquarters building |
| ▼ | Jul. 1990—Hiroshima serves company was set up as the logistics department |
| ▼ | Feb. 1993--Successful development of unpainted bottle cap |
| ▼ | Apr. 1995—Start operation plastic department |
| ▼ | Apr. 1997--Independent for plastic department, established HIRO-PLUS CO., Ltd. |
| ▼ | Apr. 1998-- Hiroshima metal industry and Hiroshima commercial merged into HIROSHIMA corporation |
| ▼ | Apr. 1999—Hangzhou Guangbang Metal Industrial Co., Ltd opening |
| ▼ | Oct. 2002--Oct. 2002--Tokyo business office • Chiba factory passed ISO 9001 2000 certification request |
| ▼ | Oct. 2003--Osaka business office •Osaka factory passed ISO 9001 2000 certification request |
| ▼ | Jan. 2004—Established 株式会社P・Sヒロハマ八街工場 |
| ▼ | Jul. 2004—Start activities 株式会社P・Sヒロハマ八街工場 |
| ▼ | Jan. 2004—Developed successfully AP caps |
| ▼ | Dec. 2005--Tokyo business office • Chiba factory.Osaka business office •Osaka factory passedISO14001 2004 certification request |
| ▼ | May. 2008—Hiroshima established branch company in India |
| ▼ | Oct. 2012-Established 株式会社P・Sヒロハマ勝央工場 |
| ▼ | Dec. 2012--Start activities 株式会社P・Sヒロハマ勝央工場 |
| ▼ | Oct. 2015—Acquisition by Asian metals industry corporation |
| ▼ | Dec. 2017—Launch of new brand “Bincaps广浜”. |
| ▼ | Apr. 2025—Hangzhou Guangbang relocated to new facility in Suichang EDZ, and adopted the new company name Zhejiang Guangbang Technology Co., Ltd. |
