Zhejiang Renzhi Co., Ltd., together with its subsidiaries, provides professional services in the oil and gas drilling and engineering fields in China. The company engages in oilfield environmental protection business, including oilfield wastewater treatment, sludge pretreatment and pool cleaning, drilling fluid emergency support technical services, mud non-grounding technical services, waste resource utilization, clean production project technical consulting services, environmental protection hidden danger management, noise control and other environmental protection businesses. It also provides drilling technical services, mud technical services, mud solidification treatment technical services, drilling technical services, continuous tubing technology, well repair technology, oil (gas) testing technology, gas well and oil well recovery enhancement technology, acid fracturing technology, casing completion technology, open hole completion technology, as well as special tool products, control safety emergency support technical services. In addition, the company offers drilling and workover pipes, tool inspection and flaw detection, drilling tool wear-resistant belt welding, pipe and tool thread repair processing, drilling tool straightening, high-pressure manifold, on-site non-destructive testing and other businesses; drilling and workover pipes, tool inspection and flaw detection, drilling tool wear-resistant belt welding, pipe and tool thread repair processing, drilling tool straightening, high-pressure manifold, and on-site non-destructive testing; and radiation cross-linked optical cable materials and radiation cross-linked wiring materials and other modified materials, pipeline functional masterbatches and special materials, alloy engineering materials, and automotive modified plastic materials. The company was incorporated in 2006 and is headquartered in Shenzhen, China. Zhejiang Renzhi Co., Ltd. is a subsidiary of Pingda New Material Co., Ltd.