If you have any questions, please contact the sales representative directly or provide feedback to the business after-sales manager (San Hong: 13325003530)

shanhong@chromatol.com ）We provide full technical tracking services. If quality issues are confirmed, we can offer returns or exchanges, or collaborate with customers to optimize the process. We will respond within 24 hours.

 Yes, we regularly hold online/offline training, covering dye applications, energy-saving and emission reduction technologies, and certification standard interpretation.

Under recommended storage conditions, the shelf life of dyes is at least 2 years from the date of production. Generally, it takes one year and is also related to storage conditions.