Haungshi Star Trip Machinery manufactures drilling rigs, air motors and air winches and offer explosive and financial services. We produce drilling rigs for quarrying, mining and civil construction, vane type, piston type air motors as well as air winches.
[pdf] Bospi is the Swiss manufacturer of drilling equipment and tools for applications in general construction and geothermal wells. Drilling companies in Switzerland and abroad rely on the quality of our products since more than 40 years. There are hardly two drill strings which look the same.
[pdf] The first offshore mobile drilling platform was the Breton Rig 20, first operated in 1949. This rig had evolved from the inland drilling barges which were used to drill in marshes and protected waters in up to 10 feet of water. The Breton Rig 20 was 160 feet by 85 feet, and could work in 20 feet water depth.
[pdf] 
