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 kahi hui ma kahi o 10,000 square meters, kahi mea kanu ma luna o 6,000 square meters, me ka ʻoi aku ma mua o 100 Taiwan hou precision hana lako a me nā mea hoʻāʻo, e like me Taiwan CNC502 kamepiula puna mīkini, Taiwan CNc8cs kamepiula puna mīkini, ʻakomi lathes a me Taiwan kiʻekiʻe-wikiwiki paʻi, Taiwan kila punch, ʻakomi tapping machine…