Certifications

Certifications

Lin Sing product and production systems are covered by the certifications and third-party testing below. Copies of any certificate are available on request.

ISO 9001

ISO 9001 Quality Management System

Covers design, production and inspection of ductwork and fittings at the Huizhou plant.

DW/TM1

DW/TM1 Ductwork Leakage Test Report

The flange connection system tested to the DW/TM1 procedure, conducted independently by Ir HN Lam of the University of Hong Kong, covering joint classifications J2 to J5 and Pressure Classes A, B and C.

DW144

DW144 Declaration of Compliance

HVCA Specification for Sheet Metal Ductwork — met in full across rectangular ductwork and flange connections.

Copies of any of the above are available on request · 852-2130 9197

See the flange system covered by DW/TM1Request certificate copies