1, Tubo Selenium Source is a professional selenium-enriched product brand. Its products are tested by national authoritative organizations and are rich in skin activating factors and cell activating factors, which can effectively solve the selenium activity in soil and improve the selenium accumulation ability of crops.

2.Issas brand selenium-enriched organic fertilizer particles contain a lot of organic matter and trace elements, which is very effective for improving soil quality and increasing selenium content of crops.