FSC:Ningbo Yawen International Trading Co.,Ltd na-agbaso ihe FSC chọrọ maka usoro nchekwa n'ihe gbasara ịzụta na ire ngwaahịa osisi, achara na akwụkwọ (FSC 100%, FSC agwakọtara, FSC Recycled). Nyocha a dabere na ọkọlọtọ: FSC-STD-40-004 v. 3.0 FSC Standard maka Asambodo Chain of Control.
GRS:Ningbo Yawen International Trading Co.,Ltd na-agbaso ụkpụrụ Global Recycled Standard (GRS) nke ECOCERT GREENLIFE SAS nyochara. Ụdị ngwaahịa dịka ekwuru n'okpuru (na nkọwapụta ọzọ na mgbakwunye ngwaahịa) kwekọrọ na ọkọlọtọ ndị a: Ákwà Dyed (PC0025). Ụdị usoro ọrụ anyị bu n'okpuru ọrụ nke nzukọ a kpọtụrụ aha n'elu maka mkpuchi ngwaahịa asambodo Azụmaahịa (PR0030).
TUV akwadoro:TUV Rheinland kwadoro Ningbo Yawen International Trading Co., Ltd dịka onye na-ebunye ọlaedo na Alibaba.
