Shenhai Kuphulika-Umboni
Ku China, certification-proof-proof certification imatsatira muyezo wa GB3836 wotsimikizira kuphulika kwamagetsi ndipo ndiyovomerezeka. Satifiketiyo imakhalabe yovomerezeka 5 zaka.
Padziko lonse lapansi, certification-proof-proof certification imaphatikizapo kuvomerezeka kamodzi komwe kuli kovomerezeka kwamuyaya. Komabe, amafunikira kuwunika kwapachaka kwapatsamba ndi mainjiniya ochokera ku bungwe lotsimikizira, limodzi ndi malipiro apachaka.