Ua hoʻokumu ʻia ʻo Dongguan Haocheng Metal Spring Co. Ltd. i ka makahiki 2005, nā ʻano puna metala pololei a pau, ka hoʻopaʻa ʻana i nā mea hana hana ʻoihana. Hoʻopili ʻia ka hui ma kahi o 10,000 square mika, ka mea kanu ma luna o 6,000 square meters, me ka ʻoi aku o 100 Taiwan hou precision production lako a me nā lako hoʻāʻo, e like me Taiwan CNC502 kamepiula puna mīkini, Taiwan CNc8cs kamepiula puna mīkini, 'akomi lathes a me Taiwan. ʻO nā kaomi kiʻekiʻe, ʻo Taiwan steel punch, mīkini paʻi ʻakomi…