Customer case | Dayun Auto
Automotive manufacturing places strict demands on production processes and product quality. Sheet-metal surface treatment is an important production stage and a foundation for subsequent coating quality. Qingyuan supplies surface treatment products and professional services based on Dayun Auto’s production needs, helping the customer manage process quality and support stable production.
Application needs
The main substrates in this case are cold-rolled steel (CRS), hot-rolled steel (HRS), galvanized steel (HDG/EG) and aluminium alloy (AL). To address their different surface characteristics and process requirements, Qingyuan supplies products for degreasing, silane treatment and phosphating, with attention to material compatibility and process coordination across these substrates.
Product support
The main products used in this case are:
Degreasing: QOH-63A＋QOH-63H, for degreasing and cleaning sheet surfaces to prepare for subsequent treatment.
Silane treatment: QSi-981, used in the silane treatment stage to support pretreatment before coating.
Phosphating: QZn-1038, used in the phosphating stage to meet the surface treatment needs of the relevant production process.
Service support
Quality assurance extends to every detail of production. Qingyuan connects product applications with the customer’s production requirements and coordinates pretreatment stages, supporting Dayun Auto’s consistent output of conforming products and stable production quality through products and services.
Qingyuan responds to requirements with expertise and earns trust through quality. It will continue developing surface treatment applications for automotive manufacturing and improving its products and services to support Dayun Auto’s production and quality management.