- Dongying Tongbo Petroleum Electronic Instrument Co., Ltd.
- Electromagnetic Wax Prevention Equipment, Ultrasonic Alloy Anti-scaling Device, Crude Oil Water Content Tester, Three Metering Devices for Oil Gas and Water
Shandong
- Huadu Electric Technology Co., Ltd
- Energy Meter, Surge Protector, Current Transformer
Zhejiang
- Nanjing Linkelec Technology Co., Ltd.
- Electricity Meter; Energy Power Meter; Smart Gateway
Jiangsu
- Zhejiang Leidun Electric Co., Ltd
- Automatic Transfer Switch, Surge Protector, Distribution Box, EV Charger, Circuit Breaker, Electric Meter, Junction Box
Zhejiang
- Shanghai Kongpengyi Electrical Technology Co., Ltd
- Distribution Cabinet Power Meter Power Distrib
Shanghai