Gongyuan Co., Ltd. announced that it has recently obtained the NPT certificate issued by ASME and obtained a grade 3 manufacturing license for polyethylene materials. The certification site is limited to the Gongyuan Pipeline Co., Ltd. factory area; the license authorization date is July 21, 2026, and the validity period is July 21, 2029.

Zhitongcaijing · 2d ago
Gongyuan Co., Ltd. announced that it has recently obtained the NPT certificate issued by ASME and obtained a grade 3 manufacturing license for polyethylene materials. The certification site is limited to the Gongyuan Pipeline Co., Ltd. factory area; the license authorization date is July 21, 2026, and the validity period is July 21, 2029.