Leeco Spring International Inc.

NiGen International is a leader in the design and manufacture of on-site nitrogen systems, headquartered in Houston, TX. From portable containerized systems to skid-mounted stationary systems, standard or custom engineered, we have the system to meet your specific needs or requirements. At NiGen, we utilize the most efficient and highest performance membranes available on the market today. As a manufacturer, we can design a system to match an existing application or provide the most efficient solution. We continually strive to communicate with our customers and deliver a safe, efficient and cost effective solution on their onsite nitrogen needs. Equipment options include nitrogen generators, air compressors, desiccant dryers, compressed air after-coolers, high-pressure booster compressors and more. Services include field services, pipeline maintenance services and hydrostatic testing. Whatever your pipeline or nitrogen system need, NiGen has you covered.

Founded in 1966, Spring Engineers of Houston began is a full-service spring manufacturer that offers a variety of coil springs for the domestic and international markets. The company operates more than five divisions throughout the United States. It produces a range of springs, stampings and wire forms in several designs. Spring Engineers of Houston manufactures spring washers, retaining rings, and compression, extension, torsion, coil, garter and bow springs. The company operates custom spring assemblies and subassemblies that assemble clients custom springs and stampings. It has received an ISO-9001:2000 certification from the International Organization for Standardization. Spring Engineers of Houston is a subsidiary of SEI MetalTek, which also operates Hardware Products Company, Colonial Han-Dee Spring and SEI MetalForms.