Changsha Demp new materials technology Co.,Ltd is a co***ny which is engaged in the development and sales of new electronic products ,chemical raw materials and biological products .we specially sell the chemical product of methoprene at overseas. Co***ny is located in the wangcheng district ,Changsha city, Hunan province ,China. We adhere to the ˇ°integrity to win the world ˇ± business purpose, bring great convenience and reliability to you is our vision....