shandong longao rubber and plastic co., ltd.'s main products include ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received ball-received the company has complete rubber physical performance laboratory, water injection press, fatigue resistance test machine and other finished product inspection equipment, and has its own open glue mixer, closed glue mixer, high-tension four-roll roll rolling machine, 0.8