(19) Concentration and Major Customers and Suppliers

For the three and nine months ended September 30, 2024 and 2023, the Company had no single customer contributed over 10% of total sales.

For the three months ended September 30, 2024, the Company had three major suppliers accounted for 73%, 18% and 7% of total purchases. For the three months ended September 30, 2023, the Company had three major suppliers accounted for 71%, 18% and 7% of total purchases.

For the nine months ended September 30, 2024, the Company had three major suppliers accounted for 74%, 16% and 7% of total purchases. For the nine months ended September 30, 2023, the Company had three major suppliers accounted for 75%, 16% and 6% of total purchases.