Custom OEM/ODM Period & Functional Underwear Manufacturer
Scale your apparel brand with PFAS-free, certified leakproof period panties, incontinence underwear, and maternity garments, all sourced directly from our ISO 9001-certified facility.
on our own lines
A knitting factory,
not a trading desk
Shantou Shanhao Knitting Co., Ltd. has spent more than ten years on one narrow thing: functional underwear. We're a factory-direct period underwear manufacturer, producing reusable leakproof menstrual panties, incontinence underwear, and maternity garments nothing else.
The factory sits in Shantou; the sales team works from Shenzhen so buyers get answers in their own working hours. Between the two floors we produce 300,000 panties and 200,000 bras every month, and an in-house development team keeps improving fabrics and construction rather than waiting for a supplier to do it.
- Founded2015, Shantou City, Guangdong
- StructureVertically integrated — knit, cut, laminate, sew
- CertifiedISO 9001, OEKO-TEX 100, GOTS, GRS, OCS, BSCI
- MarketsEurope, Australia, the Americas, South Africa
Our manufacturing process
Every order moves through five controlled stages before it ships — this is the technical discipline behind our certifications.
Design & Development
Custom fit, construction and spec sheet built to your brief.
Pattern & Sample
Physical samples produced and shipped in 5–7 business days.
Fabric testing
Certified, OEKO-TEX-tested materials checked before cutting.
Layer integration
Patented 4-layer absorbent core assembled and quality-checked.
Final audit & Ship
Packaging audit, then export to your market of choice.
Independently audited,
not self-declared
Quality management, material safety, organic and recycled content, and ethical manufacturing — verified by third parties. Tap any certificate to read it full size.
Built in by default, not sold as an upgrade
PFAS in period underwear has triggered recalls across the US and EU. Ours is screened out at fabric intake — before a single panel is cut.
Built in, by default
Every order- Skin-safe certified fabrics
- Breathable, irritation-free materials
- Multi-layer absorbent structure
- Leak-proof barrier technology
- Washable design, reduced waste
Excluded, always
No exceptions- PFAS (forever chemicals)
- Phthalates
- Parabens
- Hormone-disrupting chemicals
- Heavy metals in dyes and trims
| Feature / standard | Shanhao manufacturing specs | Standard trade supplier |
|---|---|---|
| Factory certifications | ISO 9001, OEKO-TEX 100, GOTS, BSCI | Basic ISO only or unverified |
| Leak-proof core tech | Patented 4-layer, PFAS-free tested | Generic TPU film layer |
| Sample turnaround | 5–7 business days | 14+ business days |
| Monthly production capacity | 500,000+ units / month | Varies / subcontracted |
| Who you talk to | The team running your production | A sales agent relaying messages |
Who we serve
Ten years supplying brands, distributors, retailers and e-commerce businesses across Europe, Australia, the Americas and South Africa.
Private label brands
Startups and growing brands building a period, maternity or incontinence line with their own branding and packaging.
Low MOQ · sample in 5–7 days- Low MOQ options for a first run
- Custom labels, hangtags and cartons
- OEM and ODM development
- Fast sampling before you commit
E-commerce sellers
Amazon sellers, Shopify stores, TikTok Shop vendors and DTC websites that need reliable production and quick restocks.
Repeat orders · batch consistency- Trend-driven product development
- Consistent batch-to-batch quality
- Fast replenishment support
- Global shipping experience
Wholesalers & distributors
Large production capacity, competitive pricing and strict quality control make Shanhao a dependable partner for volume buyers.
600,000+ units / month- 600,000+ units monthly capacity
- Bulk order and staged shipments
- Competitive factory pricing
- Documented QA system
Wholesale OEM/ODM Period Panties, Custom Panties, Swimwear, Plus-size, Shapewear
Private-label manufacturing tailored to your brand's specification — absorbency, fabric, fit, label and carton. Pick a category to see what comes off our lines.
15–35 mlHipster
The everyday best-seller. Mid rise, full rear coverage.
View range →15–30 mlBikini brief
Lower cut, slimmer core. Lace trim available.
View range →30–50 mlHigh waist
Tummy coverage and the widest gusset in the range.
View range →15–20 mlThong
Light-day and liner use. Invisible under fitted clothing.
View range →30–50 mlBoxer short
Longer leg, no ride-up. Popular for teens and sport.
View range →50–65 mlSleep & overnight
Extended front-to-back coverage for heavy nights.
View range →Lace trimLace-trim brief
Decorative edge over the same four-layer core.
View range →SeamlessSeamless bonded
Laser-cut edge, no stitch line, invisible under leggings.
View range →50–80 mlWomen's full brief
Max-capacity core with odour-neutralising inner face.
View range →30–50 mlLight bladder leak
Day-wear brief for light to moderate leakage.
View range →Up to 80 mlMen's boxer
Front-weighted core, discreet under trousers.
View range →40–60 mlMen's trunk
Shorter leg, elastic waistband, washable design.
View range →Slim coreBikini bottom
Low-profile lining that stays flat in water.
View range →Chlorine-safeSwim short
Longer leg for teens and active swimmers.
View range →Full bodyOne-piece
Water-repellent shell with integrated leak lining.
View range →High waistHigh-waist swim
Extra coverage with a wide bonded waistband.
View range →Drop cupNursing bra
One-hand clip, wire-free, four-way stretch cup.
View range →Belly supportMaternity brief
Over-bump panel that stretches through all trimesters.
View range →50–80 mlPostpartum brief
High-capacity core sized for the fourth trimester.
View range →SeamlessEveryday bras
Wire-free and lightly lined, to round out a line sheet.
View range →DayReusable day pad
Snap-wing pad with the same four-layer core.
View range →NightReusable night pad
Longer body and higher capacity for overnight.
View range →WaterproofWet bag
Zip carry pouch for used pairs — the natural bundle-in.
View range →No coreDance & everyday
Seamless briefs and dance underwear, no absorbent layer.
View range →Every category available OEM or ODM · samples in 5–7 days
Request samplesWhat brands reorder most
The styles our partners come back for. Every one can be rebuilt to your spec — different absorbency, fabric, trim, label and carton.
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Shanhao Leak Proof Moderate Absorbency Period Panties
$2.70
You save This product has multiple variants. The options may be chosen on the product page -
Menstrual Underwear – Reusable for Light to Moderate Flow
$2.70
You save This product has multiple variants. The options may be chosen on the product page -
Reusable Menstrual Panties for Women, Postpartum & Overnight, Odor Neutralizing
$3.20
You save This product has multiple variants. The options may be chosen on the product page -
Seamless Heavy Flow Leakproof Period Panties for Women
$3.10
You save This product has multiple variants. The options may be chosen on the product page -
Organic Cotton Menstrual Underwear for Women – Heavy Flow, Postpartum, Overnight Protection, Reusable Period Panties
$3.10
You save This product has multiple variants. The options may be chosen on the product page -
Shanhao 5 Layers Absorbent High Waist Heavy Flow Leakproof Panties Organic Cotton Menstrual Panties for Women
$3.00
You save This product has multiple variants. The options may be chosen on the product page -
OEM Shanhao Plus Size 4-Layer Leakproof High Cut Menstrual Panties
$2.50
You save This product has multiple variants. The options may be chosen on the product page -
Shanhao OEM Washable Leak-proof Underwear Plus Size Mesh Menstrual Panties Organic Cotton Period Panties for Women
$2.80
You save This product has multiple variants. The options may be chosen on the product page
Ranked by order volume across our partner brands
See the full catalogueWhat buyers say after the first order
Verified reviews left on our Alibaba storefront by the brands and distributors who source with us.
The product is exactly as requested to my customization. I will be back for more.
Bought this for my wife who absolutely loved it. Sizing is accurate and delivered promptly.
Size 4XL is very short, it makes it sexy. Reliable and serious store, I recommend this store. Fast shipping.
This garment is ok. Material is a little scratchy. I was given material swatches as options which I decided to use in my next sample.
Great product like always. Shipping took longer than expected but very happy with goods.
Everything is fine, the products come organized and well packaged. The quality looks quite good.
Swipe for more →
What buyers ask before production
The questions that come up in almost every first conversation — answered plainly, without the sales language.
Send it over with your product idea and target volume. You'll get a real answer from the people who would run your order.
Ask our teamDo you offer OEM and ODM, or only stock designs?
Both. Send us a tech pack and we'll build to it, or start from our existing development library and adapt it. That covers custom patterns, private labelling, logo printing, packaging development, fabric sourcing and absorbency customisation.
Which certifications do you hold?
ISO 9001 for quality management, OEKO-TEX Standard 100 for material safety, GOTS and OCS for organic content, GRS for recycled content, BSCI for social compliance, and FDA registration. Certificates are issued on request and per shipment.
What materials do you work with?
Organic cotton, bamboo fibre, modal, recycled polyamide and nylon/elastane blends — all OEKO-TEX certified. Material selection is usually driven by your target market and price point, and we'll advise on the trade-offs before sampling.
How do you control quality?
Five gates: fabric inspection at intake, in-line production monitoring, absorbency testing on the laminated core, stitching and sizing verification, and a final packaging audit. A dedicated QC team signs off each stage before the order moves on.
What are your MOQs and lead times?
Samples ship in 5–7 business days. Bulk lead time depends on fabric availability and order size, and we quote it with the price rather than after. MOQs are flexible for private label launches — tell us your target volume and we'll tell you honestly whether it works.
Are your products really PFAS-free?
Yes, and we test rather than assume. The leak barrier uses a breathable membrane with no fluorochemical coating, and finished goods are screened for PFAS, phthalates, parabens and heavy metals. Test reports are available on request.
Which markets do you supply?
Europe, Australia, North America, South Africa and across Asia — 40+ export regions in total. We're familiar with the labelling and compliance requirements that differ between them, so tell us the destination early.
Sourcing notes worth reading
Cost breakdowns, quality control checkpoints and supplier-selection guides — written for the people who actually place the orders.
Period underwear cost per wear: why reusable panties can save money
How the maths works out against disposables over a two-year ownership window.
How European brands can select a reliable period underwear manufacturer
The checks that separate a real factory from an agent with a good catalogue.
5 critical quality control points in period underwear manufacturing
Where batches actually fail, and what a buyer should ask to see at each stage.
Shanhao's newly developed super absorbent fabric
A thinner core that holds more — what changed in the lamination process.
New guides published every month
Read all articlesLet's build your next best-selling product
Whether you're launching a new brand or moving production away from an agent, send us the brief. You'll get a real answer from the people who would run your order.
- Sales office
- A601, ZhanTao Technology Building, Longhua District, Shenzhen, Guangdong, P.R. China
- Manufacturing facility
- Xianbohuan East Road, Gurao Town, Chaoyang District, Shantou City, Guangdong, P.R. China
- Phone / WhatsApp
- +86 181 2512 1337
We reply within 24 hours with a detailed proposal — pricing, lead time and next steps.