Petroleum
In 1960, we designed and manufactured a full range of high-pressure nitrogen fertilizer valves with diameters ranging from 25 to 90 and pressures from 130 to 32...
了解详情 About UsContact us 点击询价 Hello! Welcome to the official website of Shanghai Lianggong Valve Factory Co., LTD 
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品质留给时间来证明1946年至今专注阀门研发生产
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