Standard: SGS Number: NO.SDHL2012032139FT Issue Date: 2020-12-23 Scope/Range: Gas spring Issued By: Signed for on behalf of SGS-CSTC Standards Technical Services Co., Ltd Shunde Branch

Standard: SGS Number: SDHL2102002656FT Issue Date: 2021-03-15 Scope/Range: chair Issued By: Signed for on behalf of SGS-CSTC Standards Technical Services Co., Ltd Shunde Branch

Standard: SGS Number: NO.:SDHL1905008810FT Issue Date: 2021-06-03 Scope/Range: Aluminium alloy foot Issued By: SGS-CSTC Co.,Lotd

Standard: STC Test Report Number: NO.:DT126837 Issue Date: 2020-01-11 Scope/Range: Plastic five-star foot Issued By: STC（Dongguan）Company Limited

Standard: TUV Number: NO.68.190.16.0685.01A Issue Date: 2020-11-09 Scope/Range: Electroplated five-star foot static pressure test Issued By: TUV SUD Certification and Testing(China)CO.,Ltd.Shenzhen Branch

Standard: STC Test Report Number: NO.:DT126836 Issue Date: 2020-02-11 Scope/Range: Sundry hardware foot salt spray test 12 small report；Electroplated five star frame Issued By: STC（Dongguan）Company Limited

Standard: SGS Number: NO.:SDHL1602001967FT Issue Date: 2020-03-02 Scope/Range: 50mmPA casters Issued By: SGS-CSTC Co.,Lotd