Bontecn Group Saina Co., Ltd. Tuatusi Nofoaga o Dongshangtuan, 002 County Road, Changle County, Itumalo o Shandong Imeli davei@bontecn.com bangtai@foxmail.com Telefoni / WhatsApp 电话：+86 147 6866 6676 WhatsApp：+86 147 6866 6676
