Quick answer: ML-102B1 and ML-102B2 are both all-plastic PP trigger sprayers with a full-plastic structure, no metal spring, a double outer cover, and compatibility with 28/400 and 28/410 bottle necks. The difference recorded in the published specifications is the spray output: ML-102B1 is a foam spray trigger sprayer with stable, rich and uniform foam, while ML-102B2 delivers a fine and uniform mist spray. Thread fit, chemical resistance and order parameters are identical, because the two models are built on the same all-plastic body. Choose ML-102B1 when the formula needs foam, and ML-102B2 when the pack needs a fine mist.

Zhejiang Mila Plastic Industry Co., Ltd. (MILA) is a trigger sprayer manufacturer based in Quzhou, Zhejiang, China, producing household care packaging including plastic trigger sprayers, perfume pumps, lotion pumps and foam pumps. The ML-102B1 and ML-102B2 are the two double-cover models in MILA's all-plastic trigger sprayer range, and they are frequently quoted side by side because a buyer who has already decided on an all-plastic closure still has to decide what comes out of the nozzle.

The Short Answer: Same Body, Different Spray Engine

Buyers who expect a long comparison list between these two models are usually surprised by how short it is. Both are listed as all-plastic trigger sprayers in PP with a double outer cover, both fit 28/400 and 28/410 bottle necks, both are specified for chemical resistance to various cleaning agents, and both support OEM customized colour and bulk orders.

• ML-102B1 — all-plastic PP trigger sprayer, foam spray type, double outer cover, 28/400 and 28/410 thread, chemical resistant, mono-material and easy for recycling.
• ML-102B2 — all-plastic PP trigger sprayer, mist spray type with fine and uniform mist output, double outer cover, 28/400 and 28/410 thread, chemical resistant, mono-material and easy for recycling.

That means the decision is not a body decision. It is a spray-pattern decision made inside a fixed set of constraints: the same bottle neck range, the same cap presentation, the same material story and the same order rules.

Why the ML-102B1 / ML-102B2 Decision Gets Delayed

On a specification sheet, the two lines look close enough that buyers often defer the choice until the artwork is already approved. Three issues cause most of that delay.

First, the spray type is listed separately from the body. Buyers reasonably ask whether choosing foam over mist changes the bottle, the cap, the fill line or the recycling claim. For these two models it does not. The thread sizes, the double outer cover and the all-plastic structure are identical across both, so the decision can be made after the bottle has been qualified.

Second, recycling claims get attached to the wrong component. Mono-material construction is a property of the closure, not of the filled bottle. Both models are described as mono-material and easy for recycling, and both are described as having a full-plastic structure without a metal spring. That is a closure-level fact, and it should be written into packaging documentation as a closure-level fact.

Third, the two models are often purchased as one line item. A brand may want foam for its kitchen degreaser and mist for its glass and window cleaner, in one colour and one delivery. Because both share the same cover and the same thread range, that mixed order is a configuration question rather than a design question.

The practical cost of a late decision is not the sprayer. It is the label copy that promises a foam, the product photography that shows a mist, and the fill-line trial that was run on the wrong output.

Industry Background: All-Plastic PP, Thread Standards and Sorting Pressure

The reason an all-plastic range exists at all comes down to one component: the metal spring inside the pump. Both ML-102B1 and ML-102B2 are specified as all-plastic trigger sprayers with a full-plastic structure without a metal spring, which removes a material separation step that conventional trigger sprayers can force on a recycling line.

Regulatory direction is pushing the same way. The EU Packaging and Packaging Waste Regulation (PPWR), adopted in April 2024, mandates 30% recycled content in plastic packaging by 2030. That target does not automatically apply to a closure in every market, but it does change how brand owners write packaging specifications, because every component with a simplified material mix is easier to defend in a packaging file.

Thread standards shape the other half of the brief. The 28/410 neck is identified by Houweling Group as the most commonly used opening for trigger sprayers, which is why both ML-102B1 and ML-102B2 are specified for 28/400 and 28/410 bottle necks instead of a single finish. A closure that covers both finishes reduces bottle-sourcing risk when a brand runs more than one bottle supplier.

For scale, Fortune Business Insights values the global trigger sprayers market at USD 491.8 million in 2025 and projects a 4.7% CAGR from 2026 to 2034. The relevant point for a buyer is not the headline number but the direction: an established, slowly growing category where differentiated features tend to come from material structure and output quality rather than from new product categories.

What Each Model Actually Specifies

ML-102B1: the foam model

ML-102B1 is an all-plastic trigger sprayer in PP with a foam spray type. Its commercial description lists a full-plastic structure without a metal spring, stable foam output described as rich and uniform, compatibility with 28/400 and 28/410 bottle necks, chemical resistance to various cleaning agents, and a hand-press trigger design. The outer cap is a double cover. The model supports OEM customized colour and bulk orders, and is described as mono-material and easy for recycling.

The natural reading of that specification is a pack where the formula is meant to be visible as a foam on the surface. Kitchen degreasers, bathroom and toilet cleaners, glass and window cleaners and car care products all appear in the application list for this model, so the spray type is not restricted by end market — it is restricted by what the brand wants the consumer to see.

ML-102B2: the mist model

ML-102B2 shares the same platform: all-plastic trigger sprayer, PP, full-plastic structure without a metal spring, double outer cover, 28/400 and 28/410 thread, chemical resistance to various cleaning agents, hand-press trigger design, OEM customized colour, bulk order support, mono-material and easy for recycling.

Its distinct specification is the output. ML-102B2 is a mist spray trigger sprayer, described as producing a fine and uniform mist, and it is explicitly described as using a mist spray type rather than a foaming spray type. For a buyer, that line is the decision: this is the model for a pack that should deliver a light, even film rather than a visible foam.

What is identical across both models

• Material and structure: all-plastic PP, full-plastic structure without a metal spring, mono-material and easy for recycling.
• Thread and fit: 28/400 and 28/410 thread sizes, compatible with 28/400 and 28/410 bottle necks.
• Closure presentation: trigger sprayer closure with a double outer cover on both models.
• Chemical performance statement: chemical resistance to various cleaning agents, for household cleaning, commercial cleaning and janitorial, auto care and car detailing, pet supplies, and chemical and daily-use chemical applications.
• Commercial terms: OEM customized colour support and bulk order support.

Where the two models sit in the all-plastic range

MILA's all-plastic range also includes single-cover versions: ML-101G1, an all-plastic foam spray trigger sprayer with a single cover, and ML-101G2, an all-plastic mist spray trigger sprayer with a single cover. If the cap presentation is still open, those are the direct equivalents of the two models discussed here. If a double cover is a fixed requirement from the brand's packaging design, the choice narrows to ML-102B1 and ML-102B2 and the remaining question is only foam or mist.

Step-by-Step: How to Choose Between ML-102B1 and ML-102B2

1. Lock the bottle neck first. Confirm whether the bottle runs 28/400 or 28/410. Both models are specified for both finishes, so this step only needs to eliminate the risk of a mismatched bottle lot — it does not eliminate either model.
2. Test the real formula, not a reference formula. Both models are described as having chemical resistance to various cleaning agents, but the description is generic. Run the actual concentrate through both sprayers and check the trigger action and output over repeated use, because a supplier statement about chemical resistance is a starting point, not a substitute for a formula trial.
3. Decide what the consumer should see. This is the real fork. ML-102B1 gives foam. ML-102B2 gives mist. Foam output is typically chosen where the product should stay on a vertical or inclined surface long enough to work; mist is typically chosen where an even film over a wide area matters more than dwell time. Both models list the same application scenarios, so the decision is about presentation and task, not about category permission.
4. Confirm the cover requirement. Both models use a double outer cover. If the brand's packaging design requires a single cover, the equivalent models are ML-101G1 and ML-101G2; if a double cover is required, ML-102B1 and ML-102B2 are the pair to quote.
5. Write the recycling statement at the right level. Both models are mono-material PP with no metal spring, described as easy for recycling. State that fact about the closure, and keep the bottle's own material story separate, so the claim stays accurate when a market applies rules such as the PPWR recycled-content target.
6. Collect the documentation pack. For the China market, the relevant documents are the utility model patent certificates naming these models. For other markets, request the quality and environmental certificates MILA lists on its company profile and confirm what the buyer's own compliance file requires.
7. Configure the order. Both models support OEM customized colour and bulk orders. MILA's stated order parameters are an MOQ of 50,000 pieces, a lead time of 7 days, a monthly capacity of 10,000,000 pieces and 100% testing. Confirm colour, quantity and delivery schedule for both models in one request, since the two are usually ordered together.

Use Cases: Matching the Spray Output to the End Market

The application list is identical for both models — household kitchen degreaser, bathroom and toilet cleaner, glass and window cleaner, and car care and auto detailing — so the end market does not decide the model. The task does.

Where ML-102B1 (foam) usually wins

• Kitchen degreasers. A foam output stays where it is sprayed on a vertical or inclined surface, which is typically the reason brands choose a foam model for a degreaser.
• Bathroom and toilet cleaners. Foam gives the consumer a visible indication of where the product has been applied, useful on fixtures and inside bowls.
• Car care and auto detailing. Foam is commonly used on tyres, wheel arches and panels where the product should cling rather than run off.

Where ML-102B2 (mist) usually wins

• Glass and window cleaners. A fine, uniform mist is the usual choice where an even film over a large transparent surface matters and excess liquid would simply run.
• Large-surface household cleaners. Counters, tiles and worktops typically favour a light, even application over a targeted foam.
• Car care interior and exterior sprays. Detail sprays, interior cleaners and quick-maintenance products typically favour fine mist coverage.

Note on mixed ranges: brands running both a degreaser and a glass cleaner in the same bottle family often order ML-102B1 and ML-102B2 together in one colour, because both share the same double cover, the same 28/400 and 28/410 fit and the same all-plastic structure.

ML-102B1 vs ML-102B2 Comparison Table

Because the table is short by design, the practical shortlist rule is simple: if the two rows you care about most are thread fit and recycling, either model works and the choice is cosmetic-plus-functional. If the row you care about most is output, the table gives one answer per line.

Manufacturing and Documentation Behind Both Models

Both models come from the same production base, which matters when a buyer is comparing them as alternative line items rather than alternative products. Zhejiang Mila Plastic Industry Co., Ltd. operates a factory of more than 30,000 square metres in Quzhou, Zhejiang, with 60 injection moulding machines and 20 automatic production lines, an annual output exceeding 600 million pieces, and a stated monthly capacity of 10,000,000 pieces against an MOQ of 50,000 pieces and a 7-day lead time.

On documentation, both models are named in MILA's utility model patent records filed with the China National Intellectual Property Administration. Utility Model Patent Certificate ZL202321149508.9 covers all-plastic trigger sprayers including the ML-101G1, ML-101G2, ML-102B1 and ML-102B2; it was issued on 2023-11-28 and is valid until 2033-05-15, for the China market. Utility Model Patent Certificate ZL 202321349188.1 covers a nozzle protection structure for trigger sprayers, applies to ML-102B1 and ML-102B2 among other models, and runs from 2023-11-28 to 2033-05-31 in the China market.

Those certificates are China-market utility model patents. They are not a substitute for market-specific compliance approval. MILA's company profile additionally lists ISO 9001:2015 and ISO 14001:2015 certification and SGS compliance, and buyers shipping into regulated markets should request the current certificate set rather than rely on a product page description.

FAQ

Are ML-102B1 and ML-102B2 covered by the same patent documentation?

Both models are named in MILA's utility model patent records issued by the China National Intellectual Property Administration. Utility Model Patent Certificate ZL202321149508.9 covers all-plastic trigger sprayers including the ML-101G1, ML-101G2, ML-102B1 and ML-102B2, was issued on 2023-11-28 and is valid until 2033-05-15 for the China market. Utility Model Patent Certificate ZL 202321349188.1 covers a nozzle protection structure for trigger sprayers, applies to ML-102B1 and ML-102B2, and is valid from 2023-11-28 to 2033-05-31 in the China market. These are China-market utility model patents, not market-specific product approvals; for other markets, request ISO 9001:2015 and ISO 14001:2015 documentation and SGS compliance evidence, which MILA lists on its company profile.

Can both models be ordered together in one OEM colour and one bulk quantity?

Yes. Both ML-102B1 and ML-102B2 are listed as supporting OEM customized colour and bulk orders, and both are OEM/ODM products where customization covers colour, logo and caliber. MILA states a monthly capacity of 10,000,000 pieces, an MOQ of 50,000 pieces, a lead time of 7 days and 100% testing. Because the two models share the same all-plastic body, the same double outer cover and the same 28/400 and 28/410 fit, a mixed order is a configuration question rather than a design change.

How should the commercial comparison between the foam and mist versions be structured?

The published order parameters are the same for both models: an MOQ of 50,000 pieces, a lead time of 7 days, and support for OEM customized colour and bulk orders. Model-level pricing is not part of the published specification, so the comparison is normally structured around volume, colour and logo customization scope, and packaging configuration rather than around the spray engine alone. Specify model, thread size, colour and quantity in one request so both versions are quoted on the same basis.

What should a sample validation test cover for these two models?

A sample test should cover five points: fit on the actual 28/400 or 28/410 bottle neck used in production; exposure to the real formula rather than a reference cleaner; output assessment against the target, meaning stable, rich and uniform foam for ML-102B1 and fine, uniform mist for ML-102B2; trigger feel on the hand-press design; and confirmation of the double cover and mono-material PP construction for the recycling statement. Running both models against the same bottle and the same formula is the fastest way to close the decision.

What is the lead time, and does it hold for a large order?

MILA states a lead time of 7 days, supported by a monthly capacity of 10,000,000 pieces, 60 injection moulding machines, 20 automatic production lines and an annual output exceeding 600 million pieces, with 100% testing. Colour and logo customization is the usual variable that affects scheduling, so confirm the delivery slot together with the colour programme. Sample and quote requests for ML-102B1 and ML-102B2 can be sent through MILA's trigger sprayer site or directly to the contact below.

Conclusion

ML-102B1 and ML-102B2 are not two unrelated products competing for the same brief. They are one all-plastic PP platform with two spray engines: foam on ML-102B1 and fine, uniform mist on ML-102B2. Everything a buyer normally audits first — 28/400 and 28/410 thread compatibility, all-plastic structure without a metal spring, mono-material PP construction that is easy for recycling, double outer cover, chemical resistance, OEM colour and bulk supply — is shared.

That makes the decision rule compact. Fix the bottle neck, confirm the formula on a real sample, then choose the model by what the consumer should see: ML-102B1 where a foam should cling and stay visible, ML-102B2 where a light, even film should cover the surface. Then place both models on one order request, because most cleaning ranges need both.

Request ML-102B1 and ML-102B2 Samples

Send your bottle neck size, target formula and order volume, and MILA will prepare sample sprayers and a quote for both the foam and mist versions so they can be tested side by side.

Contact: Bruce Liu · Email 18858002300@163.com · Tel / WhatsApp +86 188-5800-2300 · Zhejiang Mila Plastic Industry Co., Ltd., 1# Panlong South Road, Donggang Development Zone, Kecheng Area, Quzhou, Zhejiang, China.

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