Recycled Filament Line Secures GRS Batch Approval

Shanyue now produces certified RPET filament ranging from 75D to 300D with dope-dyed color matching, offering an 86% water saving compared with conventional lines.

Closing the loop with certified inputs. Every batch is tracked from bottle flakes through spinning, texturizing, and dope dyeing within a single MES so brand compliance teams maintain one audit trail.

Our RPET program completed its fourth-quarter audit with Intertek, unlocking a continuous supply of GRS-certified filament yarns. The facility feeds three spinning positions dedicated to recycled inputs, fitted with melt filtration that maintains pigment stability even on neon palettes.

Dope dyeing removes the downstream jet-dye step, shrinking finishing lead time by six days while preventing tone variation between lots. Brands targeting bluesign or Higg Index reporting can pull monthly sustainability statements directly from our portal.

To support product creation, our Shanghai studio prepared a 48-color capsule that mirrors best-selling athleisure shades. Each colorway includes tensile, pilling, and colorfastness data so designers can slot the yarn into running programs without retesting.

Retailers rolling out recycled claims across store signage can also bundle the yarn with our traceable swing tags, complete with QR codes tied to yarn lot data.