How to Identify The good & low quality grain puff machine

1) Whether The rice Puffing parts is one time casting produced or not,if not one time casting produced by liquid steel,then the safty can not ensure;

If that is weld by iron tube,it is dangerous to workers,and can not using long time to puff wheat and so on need high pressure cereals.
 

2) The shock mitigation system of puffing machine is importment, small factory have no ability to produce,and in order to save cost,they have no orientation device on shock mitigation,thus no effect to protect to the main engine. Piezometer and so on parts;

Some producer only using  ordinary  paint on surface of machine;

Raw material using useless such as old steel and old motor.
 

3)  Device certificate,our cereal puffing machine have CE certificate.