Not familiar with the product, how do I know which product is right for me?

Not familiar with the product, how do I know which product is right for me?

Not familiar with the product, how do I know which product is right for me?
In order to better determine the model required by the customer, we need to get the following information:

For checkweigher:
1. Material name：              
2. Length, width and height of material:   cm*    cm*      cm                
3. Material weight:      g
4. Required accuracy:        g
5. The required speed:          m/min or           pieces/min

For packing machine：
1.Material name：
2.Length, width and height of material:   cm*    cm*      cm   
3.How many materials per package
4.The required speed:           pieces/min