Certification of registration ISO9001

Certification of registration ISO14001

Certification of registration ISO45001

Certification of High-tech Enterprise

Test report of 85 series double-side fireproof window

German PHI passive window calculate test report-cool zone

German PHI passive window calculate test report-cold zone

Test report of five performance indexes for doors and windows (K value=0.78)

Test report on insulation of glass fiber polyurethane composite windows

Testing reports of G-Ren passive window

1-hour fire test of GR60 fire-resistant windows

Test report of five performance indexes for doors and windows (double glass 1.5

Thermal conductivity test of G-Ren PU fiberglass composite profile - Intertek

Volatile component test of G-Ren PU fiberglass composite profile - Intertek

Salt test of G-Ren PU fiberglass composite profile - Intertek

Strength test of G-Ren PU fiberglass composite profile - Intertek

Nail-holding ability test of G-Ren PU fiberglass composite profile - Intertek

Impact resistance test of G-Ren PU fiberglass composite profile - Intertek