To address: Yiyuan Economic Development Zone in Shandong
Headquarters call：0533-3282222 3382222
Home sales hotline：0533-3286666 3266666
Foreign sales hotline：0533-3381777
Hotline：400-999-6999
Fax：0533-3259888 3280999
Group mailbox：
ziboyonghua@126.comInternational sales e-mail：
yonghuafilter@126.com
