Yonsha's factory is located in Shanghai China. Yonsha produces PB80B one bellow suction cups/ vacuum cups. Yonsha has many PB80B suction pads/ vacuum pads on stock. Diameter: 80mm, hole diameter: 23mm, total height: 32mm. NBR, SI, SE and PU are Yonsha's standard materials. Yonsha has technicians to design rubber compounding.