参与起草 NY/T 4688-2025《25-Hydroxycholecalciferol》国家标准

We are pleased to share that Shandong Haineng Bioengineering Co., Ltd. took part in drafting NY/T 4688-2025, the national industry standard for 25-hydroxycholecalciferol.

Participation in national standard-setting reflects our long-standing technical expertise in 25-hydroxyvitamin D3 (25-OH-D3) production and our commitment to the development of the feed-additive industry.

The standard defines the technical requirements and test methods applied to 25-hydroxycholecalciferol used in feed, and it gives buyers a common reference when comparing specifications between suppliers.

Customers who need the standard reference for their own compliance files may request the relevant details from our quality department.