1. गुणवत्ता सबसे पहले और सबसे महत्वपूर्ण, आपूर्तिकर्ता के पास उपलब्ध सामग्री की गुणवत्ता की जाँच करें। उच्च गुणवत्ता वाली शीट मेटल न केवल आपकी छत को लंबे समय तक टिकाऊ बनाएगी, बल्कि यह उसके देखभाल की आवश्यकता को भी कम करेगी।
The factory process behind metal lunch boxes often involved a series of intricate steps. First, the raw materials were sourced and cut into the appropriate sizes. Next, the metal sheets underwent printing, where vibrant colors were applied to create eye-catching designs. The pieces were then shaped, bent, and fused together, creating a sturdy construction that could withstand the rigors of daily use. Finally, a protective coating was applied to guard against rust, ensuring these lunch boxes would endure for years.
