Wellong Instruments Co., Ltd. is based in Taiwan and lists cerebrospinal fluid (CSF) management valves on Global Trade Plaza. The company offers a CSF Valve Burr Hole model 02512 and a CSF Flow Control Valve Small model 04120, both categorized under Industrial Valves & Gauges. The CSF Valve Burr Hole 02512 is available in 12 mm and 14 mm sizes for pediatric and adult use, with high, medium, and low pressure settings. It features a flexible silicone elastomer to prevent sticking and deformation, an included connector, an uncomplicated internal flow path, and two-way flushing that eliminates separate reservoirs. The non-metallic design does not interfere with CT scans or MRI, and a polypropylene needle guard prevents complete needle penetration. The silicone elastomer dome is injectable. The CSF Flow Control Valve Small 04120 uses a pressure membrane to control flow when the patient is lying down and a slit valve at the distal end of the peritoneal catheter to manage drainage during posture changes to sitting or standing. Double pressure membranes provide an anti-siphon effect to prevent over-drainage. Buyers can send an enquiry through Global Trade Plaza.