Qingdao Tongsan Plastic Machinery Co., LTD, Add:Yangzhou Road Jiaozhou, Qingdao, south west Tel:+86-532-82215318 / 82221583 Fax:+86-532-82212332 Service Hotline+86-532-82212308 E-mail:tongsansuji@163169.net
PLASTIC EXTRUDER
SJ Series of Single-screw...
SJSZ Series Conical Doub...
