Mxjo are rewraps. lol There are only 5 companies that make 18650s Panasonic, lg, sony, Samsung and sanyo. All the rest that these other companies have like efest, imren, mxjo and all others are rewraps of the main companies rejects that didn't pass q.e. inspections. If you are looking for a good 3000mah battery get some authentic lg hg2s