Ningbo Zhongtong Electrical Appliance Co., Ltd ke morekisi ea hloahloa oa li-relay, likhokahanyo le likhoele. E thehiloe ka 2010 mme e ikemiselitse ho etsa lipatlisiso, ho nts'etsapele le ho etsa lisebelisoa tsa elektronike tsa likoloi, lisebelisoa tsa motlakase tsa motlakase tse ncha, le lisebelisoa tsa terata, lihokelo.