On August 10, 2011, the Chinese Ministry of Commerce forecast that the price of rubber rose for five consecutive weeks from August 1 to July 7. It was 0.8% higher than the previous week (the same below) and 4% higher than the beginning of July. Butadiene, a raw material for synthetic rubber, has risen in price and production costs have increased, pushing up the price of synthetic rubber. Last week, the prices of butadiene rubber, butadiene rubber, and styrene-butadiene rubber rose by 3.5%, 1.6%, and 0.9% respectively. However, due to the increase in tapping volume in Yunnan and other production areas and the increase in inventories, the price of natural rubber stopped falling, and the prices of imported No. 3 smoke tablets and domestic No. 1 standard rubber all fell by 0.2%. Natural rubber inventories continued to climb. On August 5th, the stock of natural rubber in the Shanghai Futures Exchange was 20,700 tons, an increase of 10.3% from the previous week and an increase of 44.4% from the end of June. At present, the operating rate of the tire industry is low, and the market purchases are declining. It is expected that the price of rubber will stagnate in the later period. The single-screw pump is a rotor-type positive displacement pump, which relies on the intermeshing of the screw and the bushing to produce volume changes in the suction cavity and the discharge cavity to transport liquid. It is an internal meshing closed screw pump. The main working parts are composed of a bushing (stator) with a double-ended helical cavity and a single-ended helical screw (rotor) meshing with it in the stator cavity. When the input shaft drives the rotor to make a planetary rotation around the center of the stator through the universal joint, the stator-rotor pair is continuously meshed to form a sealed cavity. - The rotor pair is transported to the extrusion end, and the medium sucked into the closed cavity flows through the stator without being stirred and destroyed. Single screw pump classification: integral stainless steel single screw pump, shaft stainless steel single screw pump Single Screw Pump,Screw Type Pump,Screw Pumps,Centrifugal Screw Pump Jiangsu Qiantu Trading Co., Ltd. , http://www.qiantupump.com