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	WARMLY CELEBRATE TO TIANJIN OPTICAL INSTRUMENT CO.,LTD FOR O…  Tianjin Wangding Optical Instruments CO.,LTD news

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	TIANJIN WANG DING OPTICAL INSTRUMENTS CO.，LTD.is one of leading manufacturer and exporter of surveying instruments,Automatic levels, Electronic levels, Hand-levels，Lasers，Theodolites，Total stations and accessories in china.