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1998
Designed and produced valve core production equipments
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2001
Designed and produced semi-automatic assembly equipments for valve cores
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2010
Started the business of nitrogen gas spring valve cores
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2012
Started the business of household air conditioner valve cores
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2016
Monthly sales exceeded 100 million units
Designed and produced automatic assembly lines
Started the business of automotive air conditioner valve cores -
2017
Established special valve cores department
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2018
Joined Himile Group
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2019
Started international business
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2024
Change the company from Gaomi Tongchuang Valve Core Co., Ltd. into TONTRON PRECISION TECHNOLOGY (SHANDONG) CO., LTD.
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2025
Start the business of parts for air suspention