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BUYING GUIDE
Two door and window quotations can look similar but have very different specifications, performance and included costs. Learn what B2B buyers should compare before choosing a Chinese manufacturer.
START WITH THE SPECIFICATION
When sourcing customized Doors and Windows from China, buyers often receive different quotations from different manufacturers. The price gap can be significant, even when the products appear similar.
The reason is simple: the quotation may be based on different aluminum profiles, glass, hardware, finishes, performance requirements, packaging or shipping terms.
Compare the product configuration first, then compare the price.
WHY PRICES DIFFER
System, dimensions, thermal break and structural configuration.
Type, thickness, glazing configuration and performance requirements.
Handles, locks, rollers, hinges and other accessories.
Color, powder coating, anodizing or other surface treatments.
The aluminum profile is one of the first items buyers should compare. Two products with the same overall appearance may use different profile systems and structural configurations.
When comparing quotations, make sure the quoted profile system is clearly identified rather than comparing only the product name.
Glass can have a major effect on the final quotation. Before comparing prices, confirm that each supplier is quoting the same glass specification.
Clear, tempered, laminated or other required glass.
Single, double or triple glazing according to the project.
Low-E, insulation and other project requirements.
HARDWARE & ACCESSORIES
Hardware can create a significant difference between two apparently similar quotes. Ask each supplier to specify the hardware included in the price.
Standard or upgraded handle configurations.
Locking system and security configuration.
Rollers, hinges and other operating hardware.
A quotation should clearly identify which items are included and which items require additional cost.
Product: Frame, sash and glass configuration.
Hardware: Handles, locks, rollers, hinges and accessories.
Finish: Color and surface treatment.
Packaging: Protection method and packing requirements.
Shipping: Trade term and destination-related costs.
Price comparisons only make sense when the products are designed for similar performance requirements.
Consider the frame and glazing configuration.
Important for exterior doors and windows.
Confirm requirements according to the project location.
The product price is only one part of the international purchasing cost. Packaging and shipping terms should also be compared.
Check protective materials, corner protection and export packaging.
Compare EXW, FOB, CIF or other terms on the same basis.
Consider the actual delivery location and logistics costs.
Before making a decision, put every quotation into the same comparison table.
| Item | Supplier A | Supplier B | Supplier C |
|---|---|---|---|
| Profile System | |||
| Glass | |||
| Hardware | |||
| Finish | |||
| Packaging | |||
| Incoterm | |||
| Total Cost |
The cheapest quotation is not necessarily the lowest project cost. Differences in specifications, packaging, shipping, replacement requirements or project delays can change the final purchasing cost.
The better comparison is product specification + performance + included cost + logistics.
The more complete the project information, the more accurately a manufacturer can prepare a quotation.
Prices can differ because of variations in aluminum profiles, glass, hardware, finishes, dimensions, performance requirements, packaging and shipping terms.
Compare quotations using the same profile, glass, hardware, finish, accessories, packaging and delivery terms.
No. A lower price may reflect different specifications or fewer included items. The complete project cost should be considered.
The quotation should clearly identify product specifications, dimensions, glass, hardware, finishes, accessories, packaging and trade terms.
PROJECT QUOTATION
Send us your drawings, quotations or project requirements. Our team can review the configuration and prepare a customized quotation based on your project needs.
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September 05, 2026
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.