How to verify a plastic bottle manufacturer in China
Shenzhen Shijin Plastic Packaging Products Co., Ltd. manufactures plastic bottles, jars and closures in Guangdong, China — we are not a trading company. This page sets out the documented information a buyer can check, and how to check it, before a purchase order is placed.
Is Shijin a real plastic bottle manufacturer?
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This page is written for a buyer running a supplier check, not for a brochure. It lists what we are, where we are, what runs in-house, what is measured, and which documents you can ask for — including the items we cannot issue. Where a figure is not published, the page says so rather than filling the gap.
The record a buyer can check
The same numbers appear on the manufacturing, quality and about pages. They are maintained here with the context that keeps each one honest.
| Key fact | Value | What the number means |
|---|---|---|
| Factory locations | 2 plants + 1 office | Shenzhen Pingshan (head office and plant) and Huizhou Huiyang (plant), both in Guangdong, China, plus a Guangzhou office. |
| Manufacturing footprint | 15,000 m² | Combined floor area of the two plants. It is not a single-site figure, and it is not the area of any one building. |
| Production equipment | 10+ injection machines 30+ blow-molding lines | Automatic blow-molding lines run the bottles; the injection machines run preforms, closures, lotion pumps and sprayers. |
| Stock molds | 2,000+ | 2,000+ stock molds in the tooling library — 646 PET, 427 PE, 22 HDPE and 13 PETG. Molds are tooling, not products, and the two counts are not interchangeable. |
| Published product records | 1,000+ | Product records published on the product library. A record is a sellable item; several records can share one mold. |
| Daily capacity | 200,000 pcs/day | 200,000 pieces per day across both plants. Actual project capacity depends on the specific product, mold and material. |
| Quality system | ISO 9001:2015 | The certification we hold, covering the quality management system. It is not a product approval. |
| Export experience | 23 years | Continuous export of plastic packaging since 2003, to 30+ countries. |
| Headcount | 150+ | Employees across the two plants and the Guangzhou office. |
| Decoration | In-house | Silk screen (up to six colours), hot stamping, pressure-sensitive labelling, spray coating with matte, gloss, frosted, holographic and soft-touch finishes, pad printing and shrink-sleeve labelling all run in-house. |
The legal entity and the operating record
Vendor onboarding starts with the legal entity. These are the details a compliance team will match against a certificate, a contract and a shipping document.
Company record
A manufacturer and a trading company answer the same questions differently. The test that separates them is physical capability: whether the mold shop, the machines and the QC records exist on the same site as the answer. Our walkthrough of that test is on how to evaluate a plastic packaging supplier.
Two production plants and one office
These are three addresses of one company, not three companies. The two plants are production sites under the same quality system; the Guangzhou address is a commercial office with no production.
Shenzhen HQ & Plant
Kengzi Street, Pingshan District,
Shenzhen, Guangdong, China
Head office and production plant. Injection molding, blow molding, the in-house mold shop, decoration and QC all sit on this site.
Huizhou Plant
Dongwenxin Industrial Park, Huiyang District,
Huizhou, Guangdong, China
Second production plant. 30+ automatic blow-molding lines, the injection shop, the in-house mold shop and the QC lab. Buyer visits are hosted here.
Guangzhou Office
Wanggang, Baiyun District,
Guangzhou, Guangdong, China
Commercial office serving buyers across the Greater Bay Area. No production takes place at this address.
Injection, stretch blow, extrusion blow, decoration and quality control run inside both plants, so the same inspection plan applies whichever site runs your order. If your vendor-approval process needs the named production site, it is confirmed during quotation. Buyer visits are hosted at the Huizhou Huiyang plant — see how to arrange one.
What runs in-house, and where to read the detail
Every bottle we ship follows the same eleven production stages: raw material, preform or parison, injection, ISBM or EBM, trimming, inspection, decoration, closure matching, final QC, packing and export.
| Process | What it covers | Detail page |
|---|---|---|
| Injection molding | Preforms for the PET route, plus closures, lotion pumps, sprayers and other dispensing components. | Injection molding |
| ISBM | Injection stretch blow molding — the PET bottle route, where a molded preform is heated and stretched into the final shape. | ISBM |
| EBM | Extrusion blow molding — the PE, HDPE and PP route, where a parison tube is blown inside a closed mold. | EBM |
| Tooling | Stock molds, modified stock molds and private molds, with mold making and maintenance in-house. | Tooling and molds |
| Decoration | Silk screen printing, hot stamping, labeling, spray coating, pad printing and shrink sleeve work on the same site as the molding. | Decoration |
| Quality control | Incoming resin checks, in-process inspection and final QC before packing. | Quality and compliance |
Equipment and capacity on the floor
Equipment is the part of a supplier check that cannot be answered from a catalogue. This is the list a buyer can compare against a walkthrough or a third-party audit.
Production equipment
Capacity is quoted against a specific product, mold and material rather than as a single plant-wide figure. Confirmed during quotation: tell us the bottle and the volume, and the number comes back against your own specification rather than a plant-wide average.
The mold shop, and what it changes for a buyer
Tooling is the difference between a two-week program and a three-month one, and it is the first place a reseller runs out of answers.
- ▸The tooling library holds 2,000+ stock molds — 646 PET, 427 PE, 22 HDPE and 13 PETG. A stock mold can be used as it is, or modified where the change is within the steel.
- ▸Three routes exist: buy from a stock mold, modify a stock mold, or develop a private mold for a shape that does not exist yet.
- ▸Mold making, mold maintenance and sampling sit in the same building, so a modification is measured against the actual cavity rather than described over email.
- ▸Sampling from an existing mold typically runs 3–10 days. A new tool is a longer program, normally 15–30 days.
- ▸Mold ownership and exclusivity are defined in the commercial agreement. We do not promise free tooling, and we do not treat lifetime mold ownership as a default.
The quality system a buyer can audit
ISO 9001:2015 is the certification we hold. It covers the management system, not any individual bottle — and the distinction matters when the person reading it is signing a regulatory filing.
Inspection and testing on every lot
Documentation discipline: ISO 9001 is the certification we hold. Supplier audit reports, material COA, migration test reports and recycled-content documents are issued as documents on request — they are evidence, not certifications.
| Document type | Who issues it | What it covers | What it is not |
|---|---|---|---|
| Certification | Third-party certification body | ISO 9001:2015 for quality management. This is the certification we hold. | Not a product approval, and not a statement about any individual bottle or closure. |
| Testing Report | An accredited third-party laboratory | Migration and food-contact testing, heavy-metal content, leak, drop and closure-torque reports on the assembled unit. | Not a certificate, and it does not cover a lot other than the one tested. |
| Material Documentation | The resin manufacturer, passed through us | Material safety data sheets, food-contact declarations for the resin grade, and the grade's technical data. | Not a Shijin certification, and not a finished-part test. |
| Recycled Content Documentation | Recycler, converter and us, as a chain | PCR and rPET / rPE content declarations and the supply-chain records that support the percentage. | Not a recycled-content certification, and it does not by itself licence the use of any recycled-content logo. |
| Compliance Documentation | Shijin, backed by the reports above | EU 10/2011 food-contact documentation, FDA food-contact documentation for the resin, third-party factory audit records and turnkey export paperwork. | Not a certification, and it does not replace your own regulatory filing or registration. |
Four ways to verify us
Pick whichever fits your process. All four are available to a buyer who has not placed an order yet.
Come and see the plant
- ▸Buyer visits are hosted at the Huizhou Huiyang plant, and you are welcome before you place a first order.
- ▸Give us about 5–7 working days’ notice, so the visit lines up with the lines running your format.
- ▸What you will walk through: 30+ automatic blow-molding lines, the injection shop, the in-house mold shop and the QC lab.
Approve a physical sample first
- ▸Sampling from an existing mold typically runs 3–10 days; a new tool is a longer program, normally 15–30 days.
- ▸Weight, wall thickness, neck finish, closure fit and decoration adhesion are checked on the sample itself, not on a render.
- ▸You approve the sample, the color chip and the master sample behind it before mass production is released.
Send your own inspector
- ▸You are free to send your own inspector or an agency for a pre-shipment inspection; we agree the checklist and the date in advance.
- ▸Third-party factory audit and supplier verification reports are available on request.
- ▸The factory audit pack contains the process flow, the equipment list and QC records.
The document list
- ▸A capability statement and copies of our ISO 9001:2015 certificate. Available upon request; original certificates and English translations are available for factory audits.
- ▸The material test reports we hold, including food-contact and EU 10/2011 documentation for the resin.
- ▸Recycled-content supply-chain documentation for PCR orders, a QC report per lot, and the export paperwork: packing list and commercial invoice.
- ▸Where your market requires testing we do not hold, third-party SGS testing can be arranged when your market asks for it.
What we do not claim
A verification page is only useful if it also records the limits. These are the statements we will not make, whoever asks.
Where the line is
- ▸ISO 9001:2015 is the certification we hold. We do not hold or claim GRS, CE, SGS, FDA or BSCI certification, and we do not describe a test report, an audit report or a supply-chain document as a certification.
- ▸We do not publish customer names or brand logos on this site. Customer projects are described by market, material and pack type.
- ▸We do not claim that any test result covers a lot other than the one tested.
- ▸We do not publish a price list, stock levels or shipping rates. Packaging is quoted per specification, and the quotation is the only place a price exists.
- ▸We do not claim a certificate, ranking, award or marketplace status that we cannot produce as a document from the issuing body.
- ▸Mold ownership and exclusivity are defined in the commercial agreement; we do not promise free tooling or lifetime mold ownership as a matter of course.
If a document your process requires does not exist, we will say so rather than issue a substitute. That answer is more useful to a compliance team than a document that will not survive the audit.
The documents to request from any supplier, including us
This list is the same one we would hand a buyer for a competing supplier. Use it to compare, not to take our word for anything.
Factory verification request list
- ☐Legal company name, and the registration record that matches it.
- ☐Plant addresses — and which one will actually run your order.
- ☐The ISO 9001:2015 certificate, and the scope it covers.
- ☐A capability statement and an equipment list.
- ☐The process flow for the specific bottle, not a generic one.
- ☐A QC report from a previous lot, with the commercial data removed.
- ☐Material documentation: what the resin grade is, and what it complies with.
- ☐A dimensioned drawing of the bottle you are being quoted.
- ☐A retained-sample policy: what is kept, for how long and where.
- ☐Whether the decoration is printed in-house or bought in.
- ☐The certificate scope covers the processes you are actually buying.
- ☐The equipment list names the machine class your bottle needs.
- ☐The quoted dimensions match the drawing, not the sample photo.
- ☐The named production site matches the one you were given for audit.
- ☐The document set answers your market filing, not the supplier’s.
- ▸A certificate the company cannot produce as a document from the issuing body.
- ▸An equipment list that names no machines, or machines that do not fit your bottle.
- ▸A QC report with no lot number, no limits and no measured values.
- ▸A refusal to name the process, the material grade or the neck finish in writing.
- ▸A sample that matches the photograph but not the drawing.
How this page is maintained
Company, plant and equipment facts change. This block records when the page was last checked and what it is checked against.
If any figure on this page changes, the page is updated and the date above moves with it. Product specifications, MOQ and lead times are not maintained here — those are confirmed during quotation, item by item.
Questions buyers ask before a factory visit
Is Shijin a manufacturer or a trading company?+
Shenzhen Shijin Plastic Packaging Products Co., Ltd. is a manufacturer. Every bottle we ship follows the same eleven production stages, and all of them run on our own floor: raw material, preform or parison, injection, ISBM or EBM, trimming, inspection, decoration, closure matching, final QC, packing and export. A buyer contracts with the factory, not with an intermediary.
Can buyers visit the factory?+
Yes. Buyer visits are hosted at the Huizhou Huiyang plant, and you are welcome before you place a first order. We ask for about 5–7 working days’ notice, so the visit can be lined up with the lines running your format. You can walk through the 30+ automatic blow-molding lines, the injection shop, the in-house mold shop and the QC lab.
Can I send a third-party inspector?+
Yes. You are free to send your own inspector or an agency for a pre-shipment inspection; we agree the checklist and the date in advance. Third-party factory audits are a normal part of onboarding for overseas brands, and third-party factory audit and supplier verification reports are available on request.
What documents can Shijin provide for vendor approval?+
A capability statement, copies of our ISO 9001:2015 certificate, the material test reports we hold (including food-contact and EU 10/2011 documentation for the resin), recycled-content supply-chain documentation for PCR orders, a QC report per lot, and the export paperwork: packing list and commercial invoice. For a full vendor audit we also provide a factory audit pack: process flow, equipment list and QC records. Original certificates and English translations are available on request.
Can I verify quality on a sample before placing a production order?+
Yes, and it is the normal route. Sampling from an existing mold typically runs 3–10 days; a new tool is a longer program, normally 15–30 days. You approve the physical sample, the color chip and the master sample behind it before mass production is released. Weight, wall thickness, neck finish, closure fit and decoration adhesion are all checked on the sample itself.
Does Shijin hold ISO 9001?+
ISO 9001:2015 is the certification we hold, and it covers our quality management system. It is not a product approval and it is not a statement about any individual bottle. We do not hold or claim GRS, CE, SGS, FDA or BSCI certification: test reports, material declarations and recycled-content records are issued as documents on request, not as certificates.
How do I know which site will run my order?+
Two plants in Guangdong, China — Shenzhen Pingshan and Huizhou Huiyang — plus a Guangzhou office. Injection, stretch blow, extrusion blow, decoration and QC run inside those two plants, and the same inspection plan applies whichever site runs your order. If your vendor-approval process needs a named production site, it is confirmed during quotation.
What happens if my market needs a document you do not have?+
We will say so rather than issue a substitute. Where a market requires testing we do not hold, third-party SGS testing can be arranged when your market asks for it. Things we cannot issue in our own name include a GRS, CE or FDA certificate — those belong to the issuing body or to the manufacturer of the material, not to us.
Where to go next
Speak the same language about molds and products
Our definitions of stock mold, private mold, mold, product, published product, stock product and custom product are fixed across the site, so a quote and a spec mean the same thing to both sides.
Arrange a factory verification
Tell us the date and the format. We will make the line, the QC records and the warehouse available — and if you cannot travel, ask for the document pack instead.
Part of About — Custom Plastic Packaging Manufacturer
Keep reading
Material, engineering and buying pages that this one sits next to.
Products behind this page
Real items from the Shijin stock-mold library. Shown specifications are the published ones; a quotation is built from your own drawing and fill volume.
150ml PET Bottle
Published specification, stock mold, MOQ 5,000 pcs.
View product →400ml PET Bottle
Published specification, stock mold, MOQ 5,000 pcs.
View product →350ml PET Bottle
Published specification, stock mold, MOQ 5,000 pcs.
View product →100ml PET Bottle
Published specification, stock mold, MOQ 5,000 pcs.
View product →120ml PET Bottle
Published specification, stock mold, MOQ 5,000 pcs.
View product →100ml PET Bottle
Published specification, stock mold, MOQ 5,000 pcs.
View product →Tell us the bottle you need - we will quote it
Send the capacity, material, neck finish and expected annual volume. MOQ is 5,000 pcs and sampling runs 3–10 days. You will get a written quotation against your own specification, not a catalogue price list.