Sinopec Oilfield Equipment (SOFE, 中石化石油机械股份有限公司, formerly known as Kingdream Public Limited Company) is a manufacturer of oil and gas equipment. It offers drilling rigs, cementing units, fracturing units, workover equipment, coiled tubing units, snubbing units, drill bits and tools, steel pipes, natural gas compressors, oil field environmental protection equipment, flow control products, and integrated solutions. In addition, the company provides petroleum and petrochemical equipment inspection, natural gas pressurization, and equipment repair​ and maintenance.