... , and great corrosion resistanceCustomized designs and logos are welcomeShandong Tongya Group is a comprehensive enterprise integrating research & development, production, sales and ... QinCell phone :+8615064878019 Address : NO.2,Tariff-free Zone,Qingdao,Shandong,China.SHANDONG TONGYA TRAFFIC SAFETY FACILITIES CO.,LTD.Contact:Jane QinCell phone ...