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| History | |
| ◆ 1983 Tone World International Corporation - Taipei, Taiwan | |
| ◆ 1987 Tone World International Corporation (Taoyuan Plant / Water Pump) - Taoyuan, Taiwan | |
| ◆ 1989 P.T. Tone World International Indonesia - Jakarta, Indonesia | |
| ◆ 1990 Tone World International (H.K.) LTD. - Hong Kong | |
| ◆ 1990 Tone World International China Shanghai Office - Shanghai, China | |
| ◆ 1992 Tone World International U.S.A. Inc. - New York, USA | |
| ◆ 1993 Tone World International China Shenzhen Office - Shenzhen, China | |
| ◆ 1995 Tone World International Ohio Sales Office / Warehouse / After Service Center - Ohio, USA | |
| ◆ 1996 Tone World International Minneapolis Sales Office - Minneapolis, USA | |
| ◆ 1997 Wan Feng Electric (Ningbo) Co., LTD. (Water Pump Plant I) - Ningbo, China | |
| ◆ 2002 Wan Feng Electric (Ningbo) Co., LTD. (Water Pump Plant II) - Ningbo, China | |
| ◆ 2006 Tone World International Zhongshan office - Zhongshan, China | |
| ◆ 2008 REX Electric (Jiashan) Co., LTD. (Water Pump Plant III) - Jiashan, China | |
| ◆ 2009 Tone World International Fuzhou office - Fuzhou, China | |
| ◆ 2009 ECO-FLO PRODUCTS INC. - Ohio, USA | |
| ◆ 2012 Primary Colors Design Corp. - Ohio, USA | |
| ◆ 2020 Tone World International Corporation (YingGe Plant / Water Pump) - Yingge, Taiwan | |
| ◆ 2021 Water Source USA - Ohio, USA | |
| ◆ 2022 Impelmex - Mexico | |