Tianjin chang yi da chemical co, ltd located in tianjin hi-tech industry area _ the base of china chemical production, which is close to the biggest seaport of north china _tianjin port we specialized in exporting chemical raw materials and now we have
Tianjin chang yi da chemical co., ltd. located in tianjin hi-tech industry area _ the base of china chemical production, which is close to the biggest seaport of north china _tianjin port. we specialized in exporting chemical raw materials and now we have grown to be the leading manufacturer and supplier in the north of china.