QINFENG | Custom FIBC & Jumbo Bag Manufacturer — 7–10 Day Samples · Own Factory in Yantai Since 2001

Request a Quote

The six details we need to calculate bag weight and quote factory-direct — plus what to do if you do not have them yet.

A quotation is only as good as the information behind it. This page lists what to send us so we can calculate your bag weight and quote the factory directly — and what to do if you do not have the details yet.

Send these six details

  1. Material and bulk density — what you pack, and its weight per cubic metre, or a sample of the data sheet.
  2. Safe working load — the payload the bag carries, and whether the bag is used once or repeatedly.
  3. Bag dimensions — base size and height if they are already fixed. If not, we can calculate them from the density.
  4. Filling and discharge — how the bag is filled, and how it is emptied.
  5. Lifting method — forklift, crane, or automated handling, and any loop height requirement.
  6. Quantity and destination — target order quantity, delivery port or address, and required timing.

Also useful, if you have it

  • Certification or compliance requirements for your market.
  • Printing artwork, liner or coating needs, and packing requirements.
  • An existing specification or a technical data sheet from a previous supplier.

Not sure about the specification?

Send what you have and tell us how the bag is used. We will recommend a construction, calculate the bag weight and confirm the specification with you before quoting.

How to send it

Use the contact form with your details, or email your specification sheet directly. Detailed technical information can be attached — we will confirm receipt and come back with questions if anything is unclear.