uPVC window making machine - how to do v corner cleaning

CMV-412 is an idea upvc, pvc window making machine to do v-corner cleaning, the machine has 4 cleaning blades which can clean both the bottom and top surface of the V-welding. Only need compressed air no need power supply.
For more details about our pvc, plastic, vinyl, upvc window making machine, please visit our website at www.cbschina.com, or email us at [e-mail]