Dalian Hongda Chemical Co.,Ltd ,established in later of the 90's, is a special in producing molecular sieve and catalyst.The well-trained workers are now making molecular sieves every day for the world market.The main products,i.e.molecular sieves 3A,4A,5A,13X,are going to every corner of the world to meet the need of natural gas industry,chemical industry and ever new use. The ISO9000 management system we passed, also the quality need of our users,urge us to keep high quality products to the m...
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