material: (PA)nylon certification: CE ROHS SGS ISO9001 thread type: Metric NPT color: white black dark grey,green yellow 1.46 years of experience in metal processing, especially in stamping parts, sheet metal parts, and machinery parts.2. Professional support on technical3. Excellent customer service.4. OEM service is welcomed.5. Material: cold rolled steel,stainless steel,galvanized steel,copper ...