FSC:Ningbo Yawen International Trading Co., Ltd ikugwirizana ndi zofunikira za FSC za unyolo waunyolo pankhani yogula ndi kugulitsa matabwa, nsungwi ndi zinthu zamapepala (FSC 100%, FSC yosakanikirana, FSC Yopangidwanso).Kuunikirako kunkatengera muyezo: FSC-STD-40-004 v. 3.0 FSC Standard for Chain of Custody Certification.
GRS:Ningbo Yawen International Trading Co., Ltd ikugwirizana ndi Global Recycled Standard(GRS) Version 4.0 yofufuzidwa ndi ECOCERT GREENLIFE SAS.Magawo azinthu monga afotokozedwera pansipa (ndinso zofotokozedwanso muzowonjezera) zimagwirizana ndi mfundo izi: Nsalu Zofiira (PC0025).Magawo amachitidwe adakhala ndi udindo wa bungwe lomwe latchulidwa pamwambapa pazinthu zotsimikizika zimaphimba Kugulitsa (PR0030).
TUV Yotsimikizika:Ningbo Yawen International Trading Co., Ltd idatsimikiziridwa ndi TUV Rheinland ngati Gold Supplier pa Alibaba.
