Jining Hongsheng Chemical Co., Ltd. was founded in 2001. Our former factory - Hongfu factory has focused on this industry for more than 20 years. Now we integrate the design, research and development, manufacture and sales in one. Our main products include 4 modules: A: Basic dyes: like auromin o, malachite green crystal, basic violet 5BN, basic rhodamine B, basic orange piece, etc. B: Acid dyes: like acid scarlet GR, acid scarlet GR (normal luster), acid scarlet 3R, direct fast scarlet ...   |