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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·10/09/2026 09:17:03
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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.