Yuhan International Trading Co. Ltd was established in March 2008.

    May 2012, Weifang Yingsheng Chemical Co., Limited. was established in Weifang, Shandong. Becoming the first integrated enterprise specialized in raw material supplement, production and service of brominated compounds.

    Oct,2012, the first plant of Yingsheng was set up and started the production in Binhai Development Zone of Weifang. There are 65 people among which 21 are technician working in this 10 acre plant. The production capacity of two production lines go up to 15000mt bromide. Also there is a middle size testing production line for new product development cooperating with numbers of research organizations.

    Oct 2012, the company acquired ISO9001 quality management system certificate
Feb 2013, the company invested in production and research of encapsulated gel breaker, at present our technology is leading the world and our new products are at least 5 years ahead of other breaker products.

    2014, the total sales of our company goes up to 50 million USD

    2015, the total sales of our company goes up to 90 million USD