Bottom line:

  • The MID a broker asks for is derived from the manufacturer’s or shipper’s name and address under CBP 3550-055. Fifteen characters at most. No spaces in the middle.
  • The five pieces are: a two-letter country code (or a Canadian province code), the first three letters of the first two usable name words, the largest number on the address line up to four digits, and the first three letters of the city. For textiles and apparel, the appendix to 19 CFR Part 102 points at the entity that performed the origin-conferring operations.
  • Membership wired to ALIBABA.COM HONG KONG LIMITED buys a showcase. It does not build an MID. Do not lock a chat-room dollar fine into the contract. Corpable does not build the code and does not guarantee ACE will take it.

Thursday night the Long Beach broker drops one line: “Need MID tonight or we cannot transmit the entry. Not the store ID. Not the Hong Kong BR.” Sales zips the Alibaba.com member ID, the Hong Kong English signboard and a Chinese business licence and replies that the manufacturer pack is complete. The broker says the code is fifteen characters built from the plant name and address. It is not a member number.

The plant then invents a pinyin string: CNHONGXIAN1111DON. The broker asks again for the legal English name, which street number is the largest, and which three city letters to take. Sales copies the Hong Kong seller from the commercial invoice into the manufacturer box. The broker says invoice seller and MID manufacturer are not the same box. The forwarder adds that “a wrong MID costs two thousand official dollars” and wants that line in the PI.

The same booking also stacks three English names: the store display name, the Hong Kong contract company, and pinyin from the Dongguan licence. The broker wants one legal English form that matches the plant address. Finance asks whether an “MID official fee” is bundled with Verified Supplier membership. The two payments do not go to the same payee. Membership goes to ALIBABA.COM HONG KONG LIMITED and buys a showcase. An MID is not a certificate you can buy, and there is no site-wide official price.

Do not reply “just invent one.” Stop three things first: do not treat a store name or member ID as the manufacturer, do not let the Hong Kong contract company stand in for the inland plant, and do not lock a chat-room dollar figure into the contract. Who stands as importer sits on the importer is not the forwarder. How letterheads line up sits on document titles. The usable order is: name which manufacturer this booking faces, build the five pieces, read the official examples, handle a Chinese name and an address with no street number, line up ACE, the invoice and ISF, and only then stop the broker reject.

Name the manufacturer first: plant name and address, not the showcase

3550-055 writes this code as an identification derived from the manufacturer’s or shipper’s name and address. For textile and apparel imports, the appendix to 19 CFR Part 102 also writes that the MID on the entry summary and release documents faces the entity that performed the origin-conferring operations. When a Hong Kong company issues the PI, the store hangs a showcase and a Dongguan plant does the origin-conferring work, the MID usually faces the Dongguan firm — not the showcase and not the Hong Kong signboard.

Before sales answers the first mail, get two written sentences from the broker: which legal name and address this booking’s MID faces; whether the entry wants one code or several. Until those two sentences exist, do not write “we will build the MID” in chat, and do not change a few letters of the member ID to close the ticket.

Membership wired to ALIBABA.COM HONG KONG LIMITED buys a showcase. CBP cannot see that store and will not register it as a manufacturer. The contract seller delivers and invoices. That does not put the origin-conferring operations in Hong Kong. A member ID, a store name and a Verified Supplier certificate number will not fill this box.

Who on this bookingCan this name source the MID?Hand over what first
The inland plant that did the origin-conferring workUsually yes — build from the legal English name and plant addressLicence name, the English legal form, address with street number and city
Hong Kong contract seller or the Alibaba.com showcaseUsually not the manufacturerDo not build from the Hong Kong signboard or the store name
Forwarder warehouse or the broker’s own letterheadNot the origin-conferring placeDo not use a warehouse address for the fourth and fifth pieces

When two plants each did part of the booking, ask the broker which manufacturer this entry faces. Do not merge two addresses into one code. If the broker wants two MIDs, hand over two legal names and two addresses. The manufacturer element on the ISF should be able to match this code. ISF will not fill how an MID is built. An MID will not fill ISF’s ten elements.

OEM labelling, a buyer-nominated plant and the seller’s second workshop are easy to mix. A brand on the carton does not change the manufacturer into the buyer’s brand name. If the seller’s second workshop is where this booking’s operations happened, hand over that workshop’s legal name and address. Do not reuse the first workshop’s old code to save time.

Write the factory request as a full sentence: “The US broker needs this booking’s manufacturer identification code, derived under CBP 3550-055 from the manufacturer’s name and address. Please send in writing the factory’s legal Chinese name, the English name already used on export invoices, and the plant address including any street number and the city in English. Do not send only a licence photo with no English.” Do not send a one-line “need MID.”

Build the five 3550-055 pieces: country, name, street number, city

CBP treats the code as five pieces, fifteen characters at most, with no spaces. The first piece is the two-letter code for the manufacturer’s country. Canada does not use CA. Use the province code — Ontario XO, Quebec XQ, British Columbia XC. A plant in China uses CN. Do not put “PRC” or a passport-style country spelling in the first piece. The province table applies only when the manufacturer is in Canada. Use the current 3550-055 table.

The second and third pieces take the first three letters of the first two usable name words. One word only? Take the first three letters. Official examples: Amalgamated Plastics Corp. yields AMAPLA; Bergstrom yields BER. Consecutive initials count as one word: A.B.C. Company yields ABCCOM. Drop English a, an, and, of and the. Treat both sides of a hyphen as one word: Rawles-Aden Corp. yields RAWCOR. Numbers in the name follow the instructions; 20th Century Fox yields 20TCEN.

The fourth piece takes the largest number on the address line, up to four digits. On 11455 Main Street Suite 9999 the largest number is 11455, so take 1145. If a suite or box number is larger than the street number, use the larger one. If the address line has no numbers, leave the fourth piece blank. When commas or hyphens split a number, strip the punctuation first; 12-34-56 yields 1234. Do not treat a postcode or a tax number as a street number.

The fifth piece takes the first three letters of the city. Tokyo yields TOK. St. Michel yields STM. After the five pieces, strip spaces and check the length is not over fifteen. If it is over, truncate under the broker’s written rule. Do not delete the name pieces because the string “looks nicer.”

PieceWhat to takeCommon wrong move
Country / provinceTwo letters; Canada uses a province codeCA, PRC, or HK standing in for an inland plant
Factory nameFirst three letters of the first two usable wordsStore name, member ID, counting the/and
Street numberLargest number on the address line, four digits max; blank if nonePostcode, unified social credit code, or the smaller suite number
CityFirst three lettersA province or the word China

3550-055 also states general rules: drop punctuation; ignore a single-letter middle initial, as in the S in Thomas S. Delvaux Company; ignore English a, an, and, of and the. The appendix has further notes on unused prefixes for certain places, including Macao factory names. Follow the current text. Do not force a translated prefix such as “Factory of” into the second piece.

CBP’s document page reminds readers that 3550-055 is guidance. Except where the law incorporates it or a contract adopts it, it does not have the force of a regulation. The textile appendix is a regulatory appendix. This booking follows whichever written rule the broker checks against. The seller first hands over the raw name and address that 3550-055’s five pieces need.

How the official examples land on this booking: AMAPLA, BER and ABCCOM are not template codes

Sales most often treats the official examples as codes you can copy. Amalgamated Plastics Corp. yields AMAPLA. That does not mean your plant can write AMAPLA. CBP is showing the take-three-from-the-first-two-words rule: Amalgamated gives AMA, Plastics gives PLA, and Corp. is handled as the instructions say. Bergstrom has one usable word, so only BER. A.B.C. Company treats consecutive initials as one word and yields ABCCOM. This booking puts its own legal English name through the same word-taking rule. It does not paste those three results into ACE.

Plants often render a Chinese licence name as Dongguan Hongxian Furniture Co., Ltd. and then take HON from Hongxian and FUR from Furniture. If the broker has already used Hong Xian Furniture Limited on prior entries, do not invent a new English form on this booking. Lock the legal English first, then take the words. How Co., Ltd., Limited, Corporation and Inc. are taken follows the current 3550-055 text and the broker’s written rule. Do not invent “drop the word company.”

Numbers, hyphens and pinyin spaces in the name are three separate questions. Numbers follow the official examples; a form like 20th enters the word-taking. Both sides of a hyphen count as one word. A pinyin space can split one Chinese name into two English words. Hong Xian and Hongxian do not yield the same first three letters. Ask the broker which English form already appears on the invoice, then build.

Do not print the official examples as an “MID lookup table” and send them to the buyer as a certificate. If the buyer wants a manufacturer identification code, send the string built from this booking’s plant name and address, and write that it is an identification derived under CBP 3550-055, not a certificate you can buy. Empty words become a laydays fight after a reject.

Chinese factory names, no street number, district only: lock the English legal form first

Many plants in Dongguan, Nankang and Cixi hold a Chinese licence. The address line says “×× industrial park, building ××.” The city line says Dongguan. Sales invents pinyin. The broker cannot match the manufacturer English on the invoice. Lock the English legal form the broker will accept — the set already used on the contract, the English invoice and prior entries, and that still matches the licence — then take the first two usable words. Do not invent a new English name on this booking.

If the address line has no Arabic numerals, leave the fourth piece blank. Do not pad it with a unified social credit code, a mobile number, or a “1” you added inside “No.1 workshop.” The city piece takes the first three letters of Dongguan — DON — not GUA from Guangdong and not CHI from China.

The plant sits in a town. The broker asks for a city. 3550-055 faces city. Ask the broker whether this booking takes Dongguan, Humen, or the city on the licence. Do not send three MID versions before that answer. If the industrial park has no street number, treat it as “no number.” Do not borrow a park-office floor number, a fire-safety number or a forwarder warehouse number.

An address with a district and no city must be completed to a city English the broker will accept. Do not let three letters of a town stand in for the city piece unless the broker confirms in writing that this booking takes that town. When township spellings disagree, use the set already printed on the invoice and packing list. Do not use one set on Thursday and another on Friday.

When you ask a sawmill or a hardware supplier for an address, ask three things in the same mail: whether the address line has Arabic numerals; how the city is written in English; whether a prior US entry already used a different English factory name. A Chinese licence photo alone still lacks English and a street number.

Whether a “3” inside “Zone A, building 3” counts as a number on the address line is a broker question. Some brokers take only a street number. Some take a building number as the largest number. Do not pick the one that “looks like a number.” A PO box, a postcode and the last four digits of a credit code are not a street number. When the address is a P.O. Box, follow the broker’s written rule. Do not stack a box number and a street number into one four-digit string.

One group, two signboards, one licence. Sales often mixes the group English name with the factory English name. The MID faces the legal name of the entity that did this booking’s work. A group website name, a fair name and a store English name may all fail to match the licence. Pin the Chinese licence name, the invoice English name and the plant address on one page, then take the words.

Hong Kong seller on the invoice, inland plant stuffing the box: do not put HK in the first piece

A Hong Kong contract seller and an inland plant doing the work is a common Hong Kong-channel structure. The commercial invoice seller is the Hong Kong company, see 141.86. The MID still faces the plant that did the origin-conferring work. The first piece is CN. Do not write HK to “look like Hong Kong goods.” Origin sits on China goods are not Hong Kong origin. Section 301 follows origin. It does not follow whether you wished the first MID piece were HK.

The bill of lading shipper can be the forwarder, the invoice seller the Hong Kong company, and the MID manufacturer the plant. Those three boxes can stand at once. The broker wants a chain you can explain, not three boxes merged into one English name. Do not rewrite the invoice seller to please the MID. Do not rewrite the factory English name to please the store.

A Canadian plant ships a semi-finished good and an inland plant assembles it for the United States. Ask the broker where the origin-conferring operations finished. Do not default to CN. The province table applies only when the manufacturer is in Canada. A Vietnamese or Cambodian plant with a Hong Kong invoice still takes the first piece from the plant’s country, not from the contract seller’s place.

Do not read “a Hong Kong company is easier for US buyers” as permission to write HK in the first piece. The buyer can see a Hong Kong contract seller. CBP’s manufacturer identification faces the place of the work. Writing both boxes clearly fails less often than merging them into one English name.

How ACE, the invoice and ISF line up: which box is not the MID

The manufacturer identification the broker keys into ACE should be derivable from this booking’s manufacturer name and address in five pieces. The seller box on the commercial invoice follows 141.86 and may be the Hong Kong company. The manufacturer element on ISF should be able to match the MID, see the ISF page. The three boxes are not one field. Do not rotate invoice seller, store name and warehouse address into the MID.

A Lacey declaration can also carry a manufacturer identification code, see Lacey Act. Brokers usually generate that box from the same name-and-address rules. What the seller hands over is still the factory’s legal name and address, not a second “Lacey MID certificate.” Do not put a Lacey scientific name, a harvest country and the five MID pieces in one cell.

FDA Prior Notice is a food pre-arrival notice, see Prior Notice. It does not take the five MID pieces and it will not fill the manufacturer identification on the entry summary. A food box may need both: an FDA confirmation number and the MID the broker asked for. Do not retitle a confirmation number and call it an MID.

Do not print a homemade string on the carton labelled “MID / CBP ID.” Until the broker has checked the code, those letters become another English set that will not match. Marks follow the contract and the packing list. The identification code stays in the entry pack.

An MID is also not a US importer number, not an EIN, not a CBP account number and not an Alibaba.com member ID. When a buyer writes “send your customs ID,” ask which of those they want. Who stands as importer still sits on the IOR page. Merging three strings into one cell comes back as “not a MID.”

On textiles and apparel the appendix names the origin-conferring entity. Fabric woven in Shaoxing and garments sewn in Nanning: ask the broker which step conferred origin. Do not default to the fabric mill or the garment plant. Hand over both addresses and wait for a written nomination. Leather bags and furniture frames follow the same question. Do not take the first piece from “the brand is registered in Hong Kong.”

ACE rejects are usually a name that does not match an address, an address that does not match a city, or a first piece written HK or CA. Answer the returned fields: legal English name, largest street number, three city letters, country or province code. Do not invent a prettier fifteen-character string to try again.

Several SKUs from one plant at one address are usually still one manufacturer identification. Two plants and two addresses do not become one code. When the broker declares manufacturer by line, hand over name and address by line. Do not write four subcontractors as one firm so the sheet looks cleaner.

If the plant still has no English legal form the broker will accept, stop the promised release date. Do not stop on “invent pinyin first.” Collect the Chinese licence name, the address, and the English name already used on export invoices. If that English name does not match the licence, fix the manufacturer English on the invoice and the contract attachment, then build the MID. Do not use pinyin on Thursday, contract English on Friday and store English on Saturday.

3550-055 is guidance. If the broker writes that this booking will be checked against the textile appendix, hand over the origin-conferring entity. When both texts point at the same plant, the seller only needs that name and address. When they point at different entities, do not pick the one that is easier to encode. Write the conflict in the mail to the broker and wait for a written nomination.

The check draft you send the broker carries only the raw materials and the five-piece draft, plus the line “please check against 3550-055; this draft does not go into the PI.” Do not attach a membership receipt, a Verified Supplier certificate or a chat screenshot that claims an official two-thousand-dollar fine. The broker wants a plant name and address, not proof that the showcase was paid.

Broker returns “MID does not match”: what sales and the plant stop

On a reject, stop the release promise. Stop: cargo available Monday, MID already cleared, an official fine already in the unit price. Do not stop: asking the plant for the legal English name, the largest street number and three city letters; asking the broker which manufacturer this booking faces. Do not tick Trade Assurance “cleared” while the entry pack is still refused.

The plant stops carton printing that still has no locked English factory name. Do not print a homemade string on the box. Do not create a “sample” booking that gives the same plant a second English name. Do not rewrite a forwarder warehouse as the manufacturer address to harvest a number that looks like a street number.

Finance deletes “official MID fee” and “CBP coding official fee” from the unit price. There is no site-wide official price. A document fee the broker charges on this booking goes on the clearance line. In the contract and the PI, delete “seller has registered an MID with CBP,” “store certification equals manufacturer filing” and “MID fines are included in the unit price.” Write instead: this booking’s MID is derived under CBP 3550-055 from the manufacturer’s name and address; the seller provides the factory’s legal name and plant address; whether ACE accepts it follows the broker’s acknowledgement.

When the buyer writes “send your MID certificate,” copy that sentence into an attachment and add: an MID is not a certificate you can buy; it is an identification built from the plant name and address; the broker uses it in the entry pack. Empty words become a laydays fight after a reject.

  1. Name in writing today: this booking’s manufacturer legal Chinese name, the English name already used on invoices, and the plant address with street number and city.
  2. Draft the five pieces and send them to the broker. Do not put the draft in the PI.
  3. The Hong Kong seller and the store name do not enter the first piece or the name pieces.
  4. Until the broker confirms, do not tick Trade Assurance released and do not quote a pickup date.
  5. Chat-room dollar fines do not go in the contract. Membership receipts do not go in the entry pack.

Corpable can sit with you on which of the five pieces is missing and how a Hong Kong letterhead splits from a mainland plant address. We do not build the MID, we do not become the broker, and we do not guarantee ACE will take it. Membership still goes to ALIBABA.COM HONG KONG LIMITED.

Questions teams actually ask

Can we build the MID from the Alibaba.com member ID or the Hong Kong English name?

No. CBP 3550-055 derives the code from the manufacturer’s or shipper’s name and address. For textiles and apparel the 19 CFR appendix also points at the entity that performed the origin-conferring operations. A store display name, a member ID and a Hong Kong contract seller are usually not that entity. Name the factory’s legal English name and plant address in writing, then build the five pieces.

The factory name is Chinese and the address has no street number. Can we still build an MID?

Yes, but do not guess. Lock the English legal form the broker will accept, then take the first three letters of the first two usable words. If the address line has no numbers, 3550-055 leaves the fourth piece blank. Take the first three letters of the city. Send the draft to the broker. Do not swap a salesperson’s pinyin for an ACE acknowledgement.

Why can a Canadian plant not use CA?

3550-055 and the textile appendix both say Canada does not use CA. Use the province code, for example Ontario XO or Quebec XQ. A plant in China uses CN. Do not copy CA from an ISO list into the first piece.

Two plants each did part of this booking. Which MID do we write?

Ask the broker which manufacturer this entry faces. The textile appendix names the origin-conferring entity. Two plants and two addresses do not become one code. If the broker wants two MIDs, hand over two legal names and two addresses.

The forwarder says a wrong MID costs a stated number of US dollars. Can we lock that into the contract?

Do not lock a chat-room dollar figure into the contract. CBP has its own path for a false declaration; follow the current statute and notices. This page only covers how to build the code from the official instructions. Membership buys a showcase. It does not build an MID and it does not make you the US importer.

Can Corpable build the MID or guarantee ACE will take it?

We do not build it and we do not guarantee entry. An advisor can sit with you on which of the five pieces is missing and how a Hong Kong letterhead splits from a mainland plant address. Membership still goes to ALIBABA.COM HONG KONG LIMITED.

Related reading

Written by Corpable Marketing Limited for Alibaba.com Hong Kong-channel sellers. Not legal, tax, or audit advice. Platform, customs, bank, and auditor outcomes follow the latest official notices. Membership fees go to ALIBABA.COM HONG KONG LIMITED. Corpable does not collect them.