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How genuine original HP45 shells are remanufactured in Hong Kong

Q: What is the minimum order for Remanufactured cartridges?

10 units, as published on the remanufacturing and product pages. The New cartridge listing uses the same MOQ of 10 units. Price is on request.

By Shenzhen Mufeng Technology Limited Company · Published Nov 10, 2026

This page explains the public remanufacturing process for genuine original HP45 (51645A) shells at MufengTech’s Hong Kong base. It is written for industrial buyers and dealers who need to know what “Remanufactured” actually means on a purchase order. It is not a repeat of remanufactured vs new HP45 cartridges, which remains the New / Remanufactured buying comparison, and it is not a rewrite of how to sell empty genuine HP45 shells internationally, which remains the packing and shipping how-to.

Shenzhen Mufeng Technology Limited Company remanufactures and supplies HP45-class cartridges from Hong Kong under MufengTech. MufengTech is an independent recycler and remanufacturer. It is not affiliated with HP Inc., and the products are not presented as HP-branded, HP-official, or HP-authorised items. HP45 and 51645A identify the cartridge model only.

What “Remanufactured” means on this site

Use only two commercial status words: New and Remanufactured. A Remanufactured cartridge, as described on the remanufacturing process page and the Remanufactured black cartridge listing, is a recovered genuine original shell and print head that has been inspected, cleaned, refilled and quality-tested in Hong Kong. It is not a new HP product.

Published product facts for the Remanufactured cartridge include water-based black ink for porous surfaces (paper, cartons, wood), a 12.7 mm (½ inch) print swath, a 42 ml class fill (exact fill confirmed with the quote), a minimum order quantity of 10 units, price on request, sample available on request, and direct worldwide shipment from Hong Kong. The same MOQ of 10 units applies to the New black cartridge.

Why the process accepts genuine original shells only

The remanufacturing page states the process depends on a sound original shell and print head. MufengTech therefore buys genuine HP original HP45 (51645A) empty cartridges only. Non-original, compatible, remanufactured or previously refilled cartridges are not accepted into the buyback intake. That boundary is an intake rule, not a quality slogan, and it should appear on any empty-shell quote.

The published closed loop is: collected worldwide → inspected, cleaned, refilled and quality-tested at the Hong Kong base → resold worldwide → collected again when empty, if the returned shell still meets the genuine-original rule.

Technician inspecting HP45-type cartridges in a remanufacturing workshop

The six published remanufacturing steps

The public process page lists six steps. This article repeats only those steps. It does not add unpublished wash chemistry, cycle times, yield rates, or warranty hours.

Collected worldwide. Empty genuine original HP45 cartridges arrive from many countries at the Hong Kong base.
Inspection and grading. Each cartridge is verified as genuine original and graded A, B or C. Unsuitable items go to material recycling, not into Remanufactured stock.
Deep cleaning. The nozzle plate, contacts and ink path are cleaned.
Refilling. Controlled refilling with water-based black ink.
Quality control. Electrical and nozzle check, print test, leak and weight check.
Resold worldwide. Cartridges that pass QC are sealed, packed and shipped directly worldwide from Hong Kong.

The Remanufactured product page restates the same quality-control sequence in buying language: original verification and grading; deep cleaning of nozzle plate, contacts and ink path; controlled refilling with water-based black ink; electrical and nozzle check; print test pattern, leak and weight check; final QC, sealing and packing. Only cartridges that pass every quality-control step are packed and sold.

Remanufactured HP45-class black cartridge after Hong Kong quality control

Why one central base in Hong Kong

The process page gives a logistics reason, not a marketing slogan: empty cartridges are shipped centrally to Hong Kong and remanufactured there, close to where they arrive, instead of being routed through several facilities. Finished cartridges ship directly worldwide from Hong Kong. The same page points readers to the public process channel @hp45cartridgesrecycling on TikTok if they want to watch workshop footage. Dealer images and crops should keep HP branding from being prominent; the product photographs used here are the unbranded site assets.

What to use this page for — and what to open instead

Use this page when a buyer, auditor or dealer asks how a Remanufactured cartridge is made and which shells can enter the loop. Use the industrial New vs Remanufactured comparison when the question is which status to put on a MOQ 10 purchase order. Use the short Remanufactured vs New HP45 overview for a compact table. Use the international empty-sell guide when the task is packing, grading photos and shipping empties. Grade definitions themselves are covered on the existing grades article; this process page only records that inspection uses A, B and C and that unsuitable shells are recycled as material.

Do not write “HP authorised,” “OEM licence,” or “official HP refill” on the PO. Do not promise a fill volume more precise than “42 ml class” until the quote confirms it. Do not use Remanufactured cartridges as a solvent or food-grade substitute; the published ink is water-based black for porous surfaces.

How to enquire about Remanufactured stock or empty intake

For Remanufactured or New cartridges, WhatsApp +86 158 1405 1051 or email frank@szmufeng.com with the status word, quantity (minimum 10 per status), destination country, and equipment type (12.7 mm TIJ coder, plotter or printer). Ask for a sample if the line has not qualified the cartridge. For empty genuine original shells, send quantity and photos and ask for a grade-based buyback quote, separate from the sales MOQ. Broader equipment context is on szmufeng.com.

FAQ: How genuine original HP45 shells are remanufactured in Hong Kong

Which empty shells does the Hong Kong process accept?

Genuine original HP45 / 51645A empty shells only. Compatible, remanufactured, previously refilled, or other non-original shells are not accepted for buyback, because the process depends on a sound original shell and print head.

What quality-control checks are published?

The process and product pages list an electrical and nozzle check, a print test, and leak and weight checks, after genuine-original verification, grading, deep cleaning and controlled refilling. This article does not add unpublished tests or pass/fail numbers.

What is the minimum order for Remanufactured cartridges?

10 units, as published on the remanufacturing and product pages. The New cartridge listing uses the same MOQ of 10 units. Price is on request.

Is this an HP-authorised remanufacturing programme?

No. MufengTech is an independent recycler and remanufacturer and is not affiliated with HP Inc. HP45 and 51645A are used only to identify the cartridge model. Products are not sold as HP-official items.

Written by the team at Shenzhen Mufeng Technology Limited Company. Questions or orders: WhatsApp +86 158 1405 1051. HP is a trademark of HP Inc. MufengTech is not affiliated with HP Inc.