THANH LONG CORP.

THANH LONG CORP. (Thanh Long Investment Joint Stock Company) manufactures precision mechanical products and expanded into producing bolts and screws in 2019. The company’s main manufacturing processes include forging, heat treatment, lathe and CNC processing, rolling threads, plating, inspection, and packing for shipment. Manufacturing equipment includes heading machines, forging machines (4 dies/4 punches), and rolling/threading machines for bolts and nuts, supporting production of nuts (M4–M6) and bolts (M3–M12) across specified lengths. Quality assurance is supported by IQC, PQC, QA, and OQC with ISO standards, along with quality control equipment such as hardness testing, salt spray, chemical analysis, and automatic inspection. The company serves customers requiring mechanical fasteners and precision components.

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