- Dongguan City Hongxia Electronic Co., Ltd.
- Address:ChongKou Industrial Zone TianXin Street No.6
- Shenzhen Taianda Electronics Co., Ltd.
- Address:
- Shenzhen Gangyuan Microkey Technology Co., Ltd.
- Address:No.7 Building 1, Wuhe Rd, Longhua District
- Shenzhen Jiulongxi Electronic Technology Co., Ltd.
- Address:1009-1011, 10/F, Dongming Building, Minkang Road, Minzhi Street, Longhua District
- Dongguan Fvwin Electronics Co.,Ltd
- Address:Hengjiao Industrial District , Shijie Tow
- Zhonglian Electric-Sound Musical Instrument Co., Ltd.
- Address:Qimopei Industry Zone Ruian Tangxia Zhejiang
- Kreal Technology Co., Ltd
- Address:suzhou, Jiangsu, China
- Shanghai Longsheng Industry Co., Ltd.
- Address:No.1088 Jinyu Road,Yongfeng street Songjiang district,Shanghai city
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