... /structure test; 2.material:various plastic or metal; 3.PPO Tee fitting plastic prototype. The following is the brife introduction for ... : 1. Our factory can make any CNC plastic prototype,PPO Tee fitting prototype,metal prototype as per your drawing or sample ... ,PPS,PEI,PEEK,PTFE,etc;various metal: Aluminum,Zinc,Brass,Copper,magnesium,45# steel,stainless steel,etc. 3. Surface treatment available ...