| October, 1935 | Seiichi Yokoi, the founder, established Tenma Factice Factory in Osaka, and started manufacturing of brown factices, white factices, and amber factices. |
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| August, 1943 | TENMA FACTICE MFG, CO., LTD. was established with the capital of 360,000 yen. |
| 1972 | Sulfur-free factice "U-8" and "U-10" were developed. |
| 1982 | The capital was increased to 50 million yen. |
| 1987 | Sulfur-free factice "Liquid F-3" was developed. |
| September, 1991 | Hyogo plant was completed at Ono-city, Hyogo. |
| May, 1995 | Hajime Yokoi, the second president, received an award for the contribution for many years from "The Society of Rubber Science and Technology, Japan". |
| December, 1997 | The second term construction of the Hyogo plant was completed. |
| June, 2006 | ISO 9001 was attested. |
| December, 2006 | KEMS, Kobe Environmental Management System, was attested. |
| May, 2008 | The company received a letter of appreciation from "The Kansai Branch of The Society of Rubber Science and Technology, Japan". |
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