Aionrise went out of business so it is doubtful anyone is providing a warranty on these. They look good and likely will last as long as the original warranty claimed in the spec sheet (25 years).

This panel does not have UL 1703. It does have international standards IEC 61215 / 61730 / 62716 / 61701 and UL 61730 that cover the area of UL 1703 but this panel might have problems passing a hard nose code inspection for a grid attached install because it doesn't have UL 1703, the american standard.

REC is a high quality brand. According this panels spec sheet, REC has the lowest warranty claim rate in the industry.

These panels did not get certified by TÜV Rheinland, even though their spec sheet says they did.