Attn: Bill Zhang（Sales Director）      Mobile/ WhatsApp: +86 156 6271 5985      E-mail: bill@sumsupply.com     E-mail: billzhangsales@gmail.com                                      Address: No. 307-7, 3rd Floor, New Material Trading Center Office Building, Sangzidian, Tianqiao District, Jinan , Shandong，China