FSC:Ningbo Yawen International Trading Co., Ltd e tausisia manaoga FSC o filifili o le puipuiga e tusa ai ma le faatauina mai ma le faatauina atu o laau, bamboo ma pepa oloa (FSC 100%, FSC fefiloi, FSC Recycled).O le iloiloga sa fa'avae i luga o tulaga: FSC-STD-40-004 v. 3.0 FSC Standard for Chain of Custody Certification.
GRS:Ningbo Yawen International Trading Co.,Ltd e tausisia le Global Recycled Standard(GRS) Version 4.0 su'etusi e ECOCERT GREENLIFE SAS.O vaega o oloa e pei ona ta'ua i lalo (ma o lo'o fa'amaoti atili i le fa'aopoopoga o oloa) e ogatasi ma tulaga fa'ata'atia: Ie Vali (PC0025).O vaega o fa'agasologa o lo'o fa'atinoina i lalo o le matafaioi a le fa'alapotopotoga ua ta'ua i luga mo oloa fa'amaonia e aofia ai Fefa'ataua'iga (PR0030).
TUV Fa'amaonia:Ningbo Yawen International Trading Co., Ltd na faʻamaonia e TUV Rheinland e avea ma Faʻatau Auro i Alibaba.
