Chengdu Heltec Energy Technology Co., Ltd. № 16, Chenghong Road, Chenghua tumani, Chengdu, Sichuan, Xitoy jacqueline@heltec-energy.com 0086-028-83267289/+8618583756538 +8618583756538 - Sotish bo'yicha menejer - Jaklin Chjao E-mail: Jacqueline@heltec-energy.com Tel/WhatsApp/WeChat:+86 185 8375 6538 Nensi Shi E-mail: nancy@heltec-energy.com Tel/WhatsApp/WeChat:+86 184 8223 7713 Coco He E-mail: sales1@heltec-bms.com Elis Li E-mail: sales3@heltec-bms.com
