FSC:Ningbo Yawen International Trading Co., Ltd e latela ditlhoko tsa FSC tsa ketane ya tlhokomelo mabapi le ho reka le ho rekisa dihlahiswa tsa patsi, lehlaka le pampiri (FSC 100%, FSC e tswakilweng, FSC e sebedisitsweng hape). Tlhahlobo e ne e itshetlehile hodima maemo a: FSC-STD-40-004 v. 3.0 FSC Standard bakeng sa Setifikeiti sa Ketane ya Tlhokomelo.
GRS:Ningbo Yawen International Trading Co.,Ltd e latela Maemo a Lefatshe a Ntjhafaditsweng (GRS) Phetolelo ya 4.0 e hlahlobilweng ke ECOCERT GREENLIFE SAS. Mekgahlelo ya dihlahiswa jwalo ka ha ho boletswe ka tlase (le ho hlalositswe ho feta sehlomathisong sa dihlahiswa) e latela maemo: Masela a Tailweng (PC0025). Mekgahlelo ya tshebetso e ne e ikarabella tlasa mokgatlo o boletsweng ka hodimo bakeng sa Khoebo ya dihlahiswa tse netefaditsweng (PR0030).
TUV e Netefalitsoe:Ningbo Yawen International Trading Co., Ltd e netefalitsoe ke TUV Rheinland e le Mofani oa Khauta ho Alibaba.
