... least6. MOQ: 40 tons7.,Certificate:ISO9001:2000 Shandong Huaheng tower Co,Ltd, founded in 2000, is an integrated ... experience in the design, manufacture, and installment of steel tower mast structure. As a specialized manufacturer and exporter for ... towers, tube towers (the voltage up to 500kv), telecommunication (communication) towers, transmission line towers, monopoles, steel pipes, grating, ...