... :Forging, Gravity castingSizes:From 1" to 4" 1. Can I add logo to the products? Yes, but we ... needing a factory to develop for you, 3. How can I know the material is correcct and acceptable?Material ... sample before deciding to buy from you?Yes, we can supply samples free of charge if not too many, ... big proportion.8. What's the payment terms you can accept. We usually require wire transfer (T/T), ...