Vacuum Insulated Panels (VIP)

The verified Qiyao product-page statement for VIP is: “thermal conductivity is lower than 0.003 W/m·K” (vacuum core). In technical reading, W/m·K is the SI unit for thermal conductivity: watts per meter-kelvin. A lower value means less heat is conducted through a unit thickness for a given temperature difference. The qualifier “vacuum core” matters. The published figure describes the core material under vacuum, not the finished panel as installed. A finished VIP assembly includes facings, edges, seams, penetrations, and fixing points. Those details can create thermal bridges, which are paths of higher heat flow around the low-conductivity core. The product name “Small Thermal Bridge Effect Insulation VIP Insulation Panel” indicates that edge and bridge effects are part of the product vocabulary, but that name does not quantify the effect. No numeric bridge value is published in the verified data.

The VIP line has 333 products on sale on Made-in-China as of 2026-10-11. That depth matters for procurement because it indicates variation across panel formats, facings, sizes, and applications rather than a single SKU. A referenced product name is “Custom Insulation Fumed Silica Vacuum Insulation Panel,” listed from $3.11/pc. The presence of “custom” in that name is consistent with a made-to-order panel line; it does not by itself publish a standard size or thickness. Another referenced name is “Small Thermal Bridge Effect Insulation VIP Insulation Panel.” The verified data does not list panel thicknesses, so thickness should not be inferred from the line count or from product photographs. If thickness is required, it must be confirmed on the specific product page or drawing.

VIP appears in both general insulation panel listings and cold-chain products. The VIP line includes cooler boxes with VIP panels. This dual presence is technically coherent: a vacuum core is used to reduce conduction through a thin section, and the same panel format can be embedded in a cooler box wall where the box needs an insulated cavity. In building insulation, VIP panels are listed as insulation panels; in cold-chain packaging, they are listed as embedded components in cooler boxes. The verified data does not state which panel is used in which assembly, what facings are required, or how edges are sealed.

For evidence-based evaluation, separate three things: the vacuum-core conductivity statement, the panel product name, and the finished assembly. The first is a published material value. The second is a product listing. The third is a system that must be tested or specified by the buyer. Thermal conductivity is not the same as R-value; R-value depends on thickness and assembly. The $3.11/pc “from” price is a starting price for “Custom Insulation Fumed Silica Vacuum Insulation Panel”; it is not evidence of price for every VIP SKU, every size, or every facing.

Limit: The published <0.003 W/m·K figure does not tell you finished panel thickness, edge/bridge performance, installation detailing, or vacuum retention over service life.