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    I ka makahiki 1979, ua hoʻokumu ka hui.

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    I ka makahiki 1984, ua komo mua ka hui i ka ʻoihana kaʻa kaʻa, ʻoihana i ka noiʻi, hoʻomohala a me ka hana ʻana i nā silencers kaʻa.

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    I ka makahiki 1998, ua kūʻai aku ka hui ma mua o 1 miliona mau pūʻulu muffler kaʻa.

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    I ka makahiki 2005, ua hoʻokumu ka hui i kahi ʻoihana hui pū me Britain Jinmao e hana i nā mufflers pili i ke kaiapuni no nā kaʻa.

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    I ka makahiki 2008, ua hoʻopuka ka hui i 3.57 miliona mau pūʻulu o nā silencer kaʻa kaʻa.

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    I ka makahiki 2015, ua lilo ka hui i mea hana nui o ka muffler kaʻa ma Kina.

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    I ka makahiki 2016, ua hoʻonui nui ka ʻoihana i kāna ʻoihana i ka ʻoihana automotive a hoʻomaka e hana i ka ʻeke automotive.