Nanchang electric single girder cranes, electric single girder cranes, lifting gravity provided by Crane Co., Ltd., Henan Province gravity. Road Zhiyuan, temper forward. Gravity Henan Province Crane Co. (www.zlqzj.com.cn) strives to be and you win, symbiosis, strategic partners to move forward, the more determined to become the machining of the most influential business, and you leap together to succeed ! Henan Province gravity Crane Co. (formerly Xinxiang recorded Army Crane Co., Ltd.) is a domestic and international reputation for excellence, one of the larger crane professional manufacturer. Mainly engaged in single and double girder cranes, gantry cranes, ship cranes, bridge machine, grab, electric hoist, and other lifting equipment manufacturing, sales and installation. 10 BC electric single girder cranes, Roman architect Victor Ruwais worked in its construction manual describes a lifting machinery. This machinery has a mast, mast mounted pulley, by guyed mast position, using a winch to pull the rope through the pulley to lift heavy objects. Some overweight machinery available two masts Jinan electric single girder cranes, constitute herringbone, lateral movement of the lifting things, but only slightly, the operation is very difficult. To the 15th century Wuhan electric single girder cranes, Italy invented the jib cranes, to solve this problem. This crane boom tilt root Hefei electric single girder cranes, top-mounted pulley arm, can lift can be rotated. It was not until the 18th century, a variety of lifting machinery used in humans also are based on human, animal-powered, the starting weight, range and efficiency is very limited. In the late 18th century, British Watt invented the steam engine improvements and after lifting machinery provided the impetus for the conditions. 1805, London Lennie Grand engineers built the first steam dock overweight machine. 1846, the British Armstrong put a new dock in Fort overweight steam machine to hydraulic cranes. Early 20th century, Europe began to use tower cranes, Henan gravity Crane Co., Ltd. (Xinxiang recorded Army Crane Co., Ltd.) is a domestic and international reputation for excellence, one of the larger crane professional manufacturer. Mainly engaged in single and double girder cranes, gantry cranes, ship cranes, bridge machine, grab, electric hoist, and other lifting equipment manufacturing, sales and installation. Structural optimization, on the one hand we must continue to take advantage of new technologies to enhance the technological content industries, increasing comparative advantages of the product to achieve the advantages of industrial upgrading; on the other hand, in the development of world-class multinational companies, but also pay attention to cultivating a number of full of creative energy and strong profitability, "specialized, sophisticated, unique, new" SMEs, optimize the organizational structure of construction machinery industry. Green development, it is necessary to comply with the comprehensive development of the energy saving efficiency requirements of green products; the second is through the reduction, efficiency, cycle, use other measures to promote green, recycling and low-carbon development, the development of high efficiency, low consumption, low emission of green manufacturing processes, reduce total manufacturing energy consumption, improve energy efficiency of resource use.