Chongqing ChangFeng Chemical Co.,Ltd has been the leading supplier of fine chemicals， Pharmaceutical and Agriculture Intermediates ,intermediates and additives in China.we share the largest capacity for phosgene production( 30000mts/Year ),offering a variety of products and can customize phosgene derivatives according to clients’requirements. Our products are sold worldwide.Having representative offices in India,Russia,Germany and Mexico. we are in a position of supplying good prices,prompt delivery,all-round after-sales service to these countries as well as areas around them.