主营产品：Manufacturing and processing of pumps (except special equipment), valves (except special equipment), pipe fittings, and water treatment equipment (operated by branches above the upper limit), wholesale and retail of fire protection equipment, pipe fittings, water pumps, and valves.
主营产品：Fans, electromechanical, pump production and processing, environmental protection equipment repair, sales (according to the law must be approved by the relevant departments to carry out activities only after the approval of the project,)
主营产品：Spring Support Hanger, Manhole, Dampers, Pipe Clamps, Bearing, Pipe Brackets, Shielded Ventilator, Waterproof Sleeve, Drainage Funnel, Suction Flapper and other miscellaneous items of power plant fittings and pipelines.
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Shandong three-leaf 
