Two local standards co-authored by the company have been approved for publication.

Recently, the Provincial Department of Housing and Urban-Rural Construction and the Provincial Plastics Industry Association jointly held a standard release and dissemination meeting, approving and releasing two standards that the company participated in compiling: the "Technical Regulations for the Application of High-Density Polyethylene Porous Net Skeleton Plastic-Steel Composite Steady-State Pipes in Yunnan Province" (DBJ53/T-118-2021) and the "Technical Regulations for the Application of Buried High-Molecular-Weight Polyethylene Drainage Pipes in Yunnan Province" (DBJ53/T-119-2021).

Yunnan Provincial Construction Engineering Local Standards are provincial standards approved by the provincial government and authorized and managed by the Provincial Department of Housing and Urban-Rural Construction. They represent the highest standards in the province's construction industry. The release and implementation of these standards fill gaps in relevant provincial fields and standardize technical applications. The release of these standards is of significant importance to the company's continued increase in innovation investment, participation in the development of provincial standards, and enrichment of the company's technological innovation content. It also holds significant meaning for promoting the company's transformation, upgrading, and high-quality development.

[Technical Center/Zou Guoping Editor/Hu Hengjin]