Corporate history
| 1977 | Suntool Corporation founded. |
| 1982 | Started production of special parts for HMA. |
| 1983 | Developed large-capacity melter for paper diapers. |
| 1985 | Started production and sale of Melter ZH-30 and ZH-60. |
| 1988 | Started production of spray gun unit. |
| 1989 | Suntool Giken K.K. founded. |
| 1992 | Spiral spray application device completed. |
| 1994 | Curtain spray application device completed. |
| 1994 | Moriguchi plant of Suntool Giken K.K. newly built. |
| 1995 | Suck-back gun completed. |
| 1997 | Developed Melter GB-75. |
| 1999 | Obtained ISO9001:1994 certification. |
| 1999 | Started manufacturing and sale of high-performance spiral spray nozzle. |
| 2002 | Developed sigma pattern. |
| 2003 | Developed mirror surface coat (a kind of slot coat). |
| 2003 | Developed foaming melt. |
| 2003 | Obtained ISO9001:2000 certification (renewed). |
| 2005 | Business of Suntool Giken Kogyo K.K. transferred to Suntool Corporation. |
| 2006 | Developed design coat. |
| 2011 | Shan Chi Le Spray Painting Equipment (Shanghai) Co., Ltd. founded. Shan ji le trading (Shanghai) Co., Ltd. Founded. |
| 2013 | Shanghai office relocated. |
| 2013 | Headquarters relocated. |
| 2014 | Headquarters relocated from Higashiyodogawa Zuiko to Moriguchi |
| 2014 | Developed new design coat,Chartered No. 5828469th |
| 2014 | Started sale of standardized equipment of foaming system |
| 2014 | India Corporation founded |
| 2014 | Started development of Rotary cutting gun, Patent application |
| 2015 | Developed hot melt flow meter |
| 2015 | Developed the coating head for indicator,Patent application |
| 2016 | Shanghai office transferred,Trade Co., Ltd changed to manufacturing industry (Shan Chi Le Spray Painting Equipment (Shanghai) Co., Ltd.) |