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7YRSShanghai Doullens Vacuum technology Co., Limited

FIRMENÜBERSICHT

Firmenalbum

Grundlegende Informationen

QUALITÄTSKONTROLLE

Qualitätsmanagementprozess

inspection
The cups are being inspected by our workers carefully.

F&E-KOMPETENZEN

F&E-Prozess

invention certificate
We have many invention certificates. Attached one of the certificates, please check.

Forschung und Entwicklung

11 - 20 People