Mechanical parts manufacturer / supplier in China, offering NPT (PT) 1/8 Fabrication Machined OEM Straight Through Precision Polishing Aluminum Brass Steel Stainless Alloy Metal Chemical Equipment Accessories Ball Valve, High-Quality Fabrication Polishing CNC Machined Custom NPT (PT) 1/2 Alloy Metal Stainless Steel Industrial Ball Valve for Chemical Equipment Accessories, High-Quality Fabrication Polishing Straight Through Custom NPT (PT) 1/2 Alloy Metal Stainless Steel Industrial Use Ball Valve for Chemical Equipment Accessories and so on.