weifang yingsheng chemical co., limited inherits from yuhan international trading co., limited. founded in 2008, yuhan has been focusing on domestic and oversea business of oilfield chemical, flame retardant and fine chemical. with the continuous development of business, yuhan established weifang yingsheng chemical co., ltd in may, 2011. taking on the basis of bromine industry in bohai bay, yingsheng devotes itself to becoming a professional global service enterprise specializing in the further processing production of bromine and brominated compounds.