LIANDA Group , LD CHEMICAL CO., LTD. is located in Changsha city, Hunan province, with beautiful scenery and convenient transportation.Being founded in 2008, we are committed R&D,production, sales and after-sales services of Optical Brighteners, Titanium Dioxide and Pigment. Especially Optical Brightener,till now we have developed more than 40 series of the optical brighteners, which have been widely used in plastics, textile, printing ink, paper, paint, coating, etc. Almost 60% of the products...