ZHANGJIAKOU RANRAN MACHINERY CO. Ltd (Short: RANRAN MACHINERY) is a high-tech Joint-stock company, located in Wudun industrial park, Qiaoxi district, Zhangjiako, Hebei province. Since its founding RANRAN MACHINERY adhering to the 'scientific and technological innovative products, integrity build brand' business philosophy, combine the business values and business philosophy, and train a number of highly cohesive and responsible workforce. There are excellent technical team, who develop and design drilling equipment, and fruitful scientific research achievements in R & D center. RANRAN MACHINERY hast strong production and processing capacity, advanced casting technology, and reliable quality. And RANRAN MACHINERY owns a high-precision numerical control machining center to ensure the accuracy of the spare parts, advanced high-frequency heat treatment process to ensure the durability of the spare parts; Advanced optimal combination for assembly technology to make our products more reliability, durability and maintainability. With high-efficiency and low-cost product applications RANRAN MACHINERY gain the market opportunities for products.

RANRAN MACHINERY focuses always on the customer demand. With many years of research and development RANRAN MACHINERY keep always the principle 'more inn ovation, quick improvement' for production, and it is a technology leader for similar products in the domestic and foreign.

GSD, YSD series drill head style drills, GSP-C Drill-table style drills and GFD reverse circulation style drills are independent researched and developed, designed, and manufactured by RANRAN MACHINERY. They are mechanical products with independent intellectual property rights and a number of national patents for mechanical products, and they are drill equipments with multi-purpose, multi-drilling technology (positive and reverse circulation for mud, air, etc. ). The products are widely used in drilling wells for irrigation, urban drinking water wells and construction of water seepage wells, ground source heat pump wells and other engineering such as the drilling of piles wells.

The products of RANRAN MACHINERY are sold at home and abroad with advanced performance and good service. In recent years, RANRAN MACHINERY cooperates with the Ministry of Commerce to carry out the UN aid projects in Africa and the projects about the geological survey, construction, prospecting and drilling with domestic major overseas group companies, domestic and foreign trade import and export companies and embassy in China. The products are now exported to Asia, Africa, South America, Europe and many other countries.

RANRAN MACHINERY will continue to research and innovative with the thinking 'customer first, quality win', take the most advanced technology to the world, and create brilliant tomorrow for the realization of industrial prosperous and revitalization of national industries.