Smart lock factory in Wenzhou, China — samples, OEM and export documents in house.

mike@bbdhome.com WhatsApp +86 13968846265

Seven Concerns Before You Order

Every buyer evaluating a new smart lock supplier has the same seven worries. None of them is answered here with a promise - each answer says what we do, what it depends on, and what we cannot control.

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The seven concerns
Concern 1The Price Looks Higher Than Another Quotation
Concern 2It Will Not Fit My Door
Concern 3The Second Batch Will Differ From the First
Concern 4We Have Never Heard of You
Concern 5The Lead Time Is Too Long
Concern 6The Minimum Order Is Too Large to Test
Concern 7Switching Suppliers Will Be a Headache
Short answersAll seven answered in one paragraph each
What this page is notA promise list. Every answer states its conditions

Concern 1 of 7

The Price Looks Higher Than Another Quotation

A higher unit price is often a different specification rather than a worse deal. Before you decide, put the two quotations side by side on the same lines.

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Concern 1 detail
MaterialZinc alloy, stainless and aluminium bodies are different costs and different weights
FinishPaint, plating and sealing are separate processes with separate costs
Mortise and bodyA 5050 body and an 8560 body are not the same product
App versionBluetooth and TTLock versions carry different electronics to the older Wi-Fi generation
PackagingNeutral carton, colour box and printed manual are three different price levels
Trade termEXW and DDP differ by freight, clearance and duties, not by the lock

Concern 2 of 7

It Will Not Fit My Door

This is the most common and the most expensive first-order mistake, and it is prevented in four steps rather than by reading a specification sheet.

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Concern 2 detail
Step 1Send a photograph of the door edge with a ruler against it, or the mortise body code
Step 2We confirm the mortise, backset, door thickness and handing in writing
Step 3Where the fit is uncertain, order a sample. It ships with a cut-out template
Step 4Production starts only after the specification is confirmed

Concern 3 of 7

The Second Batch Will Differ From the First

Consistency is a process question, not a promise. These are the four controls that make a repeat order reproducible.

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Concern 3 detail
Incoming material checkBoards, springs, shells and battery contacts checked against the confirmed specification
First article checkThe first assembled unit of a new specification measured against the drawing
In-process checkDimensions and finish measured while the batch runs, not only at the end
Batch recordBatch numbers recorded so a claim can be traced to the stage that produced it

Concern 4 of 7

We Have Never Heard of You

That is a reasonable starting position. Three documents answer most of it, and all three can be checked independently.

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Concern 4 detail
Business licenceWenzhou Mingsheng Security Technology Co., Ltd., registered 17 February 2016
Quality systemISO 9001:2015, certified 2021
Factory verificationSGS on-site verification, reviewed October 2023
Third-party inspectionSGS, BV or TUV can be booked at the factory before shipment
What we do not claimISO 9001 is a management-system certificate, not a product approval

Concern 5 of 7

The Lead Time Is Too Long

Lead time is counted from the later of the deposit and the approved sample or artwork, which is why an early artwork decision shortens the order.

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Concern 5 detail
Samples3-7 days from the confirmed specification
Trial orders10-15 days
Bulk orders20-35 days
What shortens itApproving the sample and the packaging proof early rather than in sequence
What lengthens itA specification that changes after production is scheduled
Fixed project datesTell us at quote stage and we will say whether the date holds

Concern 6 of 7

The Minimum Order Is Too Large to Test

The first order is meant to answer a question, not to fill a warehouse. Three ways to make it small enough to be a test.

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Concern 6 detail
Start with a sampleSamples ship in 3-7 days and the cost is refundable against the first bulk order
Split by modelOrder a smaller quantity of the two or three models you are most likely to re-order
Mix inside one orderOne carton of padlocks or 30 sets of door locks, with mixed models accepted
Then scaleOnce the first batch proves itself, the range and the quantity extend from the same frozen specification

Concern 7 of 7

Switching Suppliers Will Be a Headache

It is, if you switch everything at once. Four steps make it a comparison rather than a gamble.

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Concern 7 detail
Step 1Pick the model you already re-order most often, not the whole range
Step 2Ask us for that model as a sample and compare it against your current stock
Step 3Place a trial quantity at the normal MOQ against the confirmed specification
Step 4Extend to the rest of the range only after the first batch has been used in the field

The Seven Answers, Short

The same seven concerns, one paragraph each, for when you only need the summary.

Short answers

What if your price is higher than another quotation?

Compare the line items rather than the total. Material, finish, mortise size, app version, packaging and trade term all move the number. Tell us the term you are comparing against and we will quote the same basis.

What if the lock does not fit my door?

Send a photograph of the door edge with a ruler against it, or the mortise body code. We confirm the fit in writing before production. Where the fit is uncertain, a sample settles it before the batch.

What if the second batch differs from the first?

The specification is frozen in writing, the first article of a new specification is measured against the drawing, and batch numbers are recorded. A repeat order runs against the same frozen specification.

We have never heard of you. Why should we trust the order?

Check three things: the business licence date, the ISO 9001 certificate and the SGS on-site verification report. All three can be sent before you commit, and third-party inspection can be booked at the factory.

What if the lead time is too long for our schedule?

Samples ship in 3-7 days. Where a project date is fixed, tell us at quote stage and we will say plainly whether the line can hold the date rather than promising and missing it.

What if the minimum order is too large to test?

One carton of padlocks or 30 sets of door locks, with mixed models accepted. The sample cost is refundable against the first bulk order.

What if switching suppliers turns out to be a mistake?

Start with the model you already re-order most. Send us that one for comparison, place a trial quantity against the normal MOQ, and extend the range only after the first batch proves itself.

Still Worried About Something Not Listed

Send the question, or send the requirement and we will answer the concern as part of the quotation. You can also email mike@bbdhome.com directly.