Ụgwọ nke ụlọ ọrụ Chengdu Heltec Energy Technology Co., Ltd. Nke 16, Chenghong Road, Chenghua District, Chengdu, Sichuan, China jacqueline@heltec-bms.com /echo@heltec-bms.com 0086-028-83267289/+8618123313360 +8618583756538 - Onye njikwa ịre ahịa - Jacqueline Zhao Email: Jacqueline@heltec-bms.com Tel/WhatsApp/WeChat:+86 185 8375 6538 Nancy Shi Email: nancy@heltec bms.com Tel/WhatsApp/WeChat:+86 184 8223 7713 Sucre Cheung Email: sucre@heltec-bms.com Tel/WhatsApp/WeChat:+86 136 8844 2313 Justina Xie Email: Justina@heltec-bms.com Tel/WhatsApp/WeChat:+86 187 8432 3681