Dongguan Haocheng Metal Spring Co. Ltd. da aka kafa a 2005, kowane irin madaidaicin karfe spring, stamping kwararru samar masana'antun. Kamfanin maida hankali ne akan wani yanki na kan 10,000 murabba'in mita, da shuka yankin na kan 6,000 murabba'in mita, tare da fiye da 100 Taiwan daidaici samar da kayan aiki da gwaji kayan aiki, kamar Taiwan CNC502 kwamfuta spring inji, Taiwan CNc8cs kwamfuta spring inji, atomatik lathes da Taiwan High-gudun presses, Taiwan karfe naushi, atomatik tapping inji…