| 1980 |
| YIZHAN CARTRIDGE originated in Taiwan in 1980. At the initial stage, it introduced CNC machine tool to engage in valve core manufacturing. |
| 2000 |
| In 2000, all production equipment and technology of the company were transferred to Shanghai, Shanghai Yizhan sanitary equipment Co., Ltd. was established, and the brand of "YIZHAN CARTRIDGE" was launched. |
| 2011 |
| Due to the needs of industry development,Kaiping Yizhan Valve Core Co.,Ltd. was established in 2011 in the production base of cuishanhu new area, Kaiping City, Guangdong Province. |
| 2016 |
| In response to the expansion of the company's business scale, the company invested in the construction of new standard plants and introduced advanced injection molding equipment from Engel, Germany in 2016; Yizhan valve core has excellent production management level, with multiple production and assembly lines, injection molding workshop and dozens of advanced testing equipment at home and abroad. |
| Now |
| Yizhan valve core has become a long-term friendly strategic partner of well-known Sanitary Ware brands at home and abroad, and has won a good reputation from customers. It is deeply recognized by customers. It is the valve core brand trusted by Sanitary Ware brands. |
