Top Machinery (Chengdu) Co., Ltd. is a leading manufacturer and exporter of water well screens and sand-control products in China, bringing the best and most cost-efficient products for water, oil, gas, petrochemical, and environmental industries. We carry a wide range of continuous slot screens, pipe base screens, perforated tubes, slotted pipes, sieve plates, water strainers, gas strainers, casing pipes, oil tubes, centralizer, which are related to drilling well project.