รบกวนตรวจจดหมายภาษาอังกฤษให้ด้วยครับ?

Dear John,

Hello. I regret to inform you that my customer notified me for your products.

Unfortunately, the quality was not approved, sand paper has a fluff(not smooth).

Additionally, prospective customers are less consume than previously due to the economic crisis in Thailand.

Thank you everything for your kind support and hope I can do business in the future and please feel free to contact me.

Best regards,