For an order that requires different lid colors for the same trash can program, our factory treats lid color customization as a controlled production project rather than a simple color swap. The first step is order clarification. We confirm the exact lid colors, quantities per color, body color combinations, packaging method, and any market-specific labeling requirements. If the customer provides Pantone, RAL, HEX, or physical color samples, we convert those references into an internal color standard for approval.

Before mass production, we conduct color matching and sampling. Our team checks pigment or masterbatch options against the approved lid material and confirms the target gloss and texture. When needed, we prepare color chips or pre-production lid samples so the customer can approve each lid color under agreed lighting conditions. This approval step is critical because the same color can appear different on plastic parts with different surface finishes or wall thicknesses.

During production, we separate each lid color into its own batch. We use clear work orders, labeled material containers, and line-clearance checks between color runs. Where practical, we schedule color changes from light to dark to reduce cleaning time and cross-contamination risk. Hoppers, molds, and auxiliary equipment are purged properly, and regrind is controlled so that it does not affect the final lid color. Each color batch receives a unique lot code linked to the order, lid color, production date, and quantity.

Quality control is applied throughout the run. Inspectors compare lids with the approved color standard under controlled lighting, check for color uniformity, and verify that lids are packed and labeled by color code. Final packaging is organized by color and SKU, with barcode or lot identification to support traceability. Before shipment, a final audit confirms that every lid color and quantity matches the purchase order. This process allows us to handle multiple lid colors on the same order with consistency, clear traceability, and reliable delivery.