Part 2: How To Multi-Source Critical SKUS Without Losing Volume Discounts

Part 2 of 6 in our Supply Chain Resilience Series | Reading time: 7 minutes

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The Phone Call That Cost $225,000

Mark runs a $15M industrial distribution company. For 8 years, he bought hydraulic pumps from the same Chinese manufacturer. Great relationship. Best pricing. 100% of his pump volume.

Then the call came.

"Mark, our factory had a fire. Production is down for 8 weeks. We can't fulfill your orders."

Mark's inventory: 12 days of pumps left. Hydraulic pumps represented 20% of his revenue.

What happened next:

• Lost sales: $180,000 (8 weeks of revenue)
• 3 major customers switched to competitors (couldn't wait)
• Emergency orders from alternate supplier at 40% premium: $45,000
• Management time firefighting: 120 hours

Total cost: $225,000+ and 3 lost customers.

The problem? Mark had put all his eggs in one basket. No backup supplier. No plan B.

Could this have been prevented? Absolutely. Let me show you how.

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The Single-Source Trap (And Why You're Probably In It)

Here's how most distributors source products:

1. Find supplier with best price
2. Give them 100% of volume
3. Enjoy volume discounts
4. Build strong relationship
5. Become completely dependent

It makes perfect sense, right? Volume discounts. Relationship benefits. Simplified purchasing.

Until it doesn't.

Single-source suppliers can fail in many ways:

• Factory fire (Mark's story)
• Quality control issues (batch recalls)
• Bankruptcy (losing a key customer, financial mismanagement)
• Labor strikes (workers walk out)
• Capacity constraints (other customers grow, you get squeezed)
• Change in ownership (new management changes terms)
• Natural disasters (floods, earthquakes, typhoons)
• Geopolitical issues (tariffs, trade restrictions)

Any one of these can cripple your business if you're 100% reliant on one supplier.

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Why "Just Find Another Supplier" Doesn't Work

"But I can just find another supplier if mine fails," you might think.

Here's why that doesn't work:

Time to qualify new supplier:

• Request samples: 1-2 weeks
• Test quality: 1-2 weeks
• Negotiate terms: 1 week
• Place first order: 2-4 weeks lead time
• Total: 5-9 weeks minimum

Meanwhile:

• Your inventory runs out in 2 weeks
• Customers are calling daily
• You're losing sales
• Competitors are swooping in

By the time your new supplier delivers, you've lost customers and revenue.

The solution? Have qualified backup suppliers BEFORE you need them.

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The 70/30 Split Strategy

Here's the smart way to multi-source without killing your volume discounts:

Primary supplier: 70% of volume

• Maintains volume discounts
• Keeps strong relationship
• Primary communication channel

Secondary supplier: 30% of volume

• Qualified and proven
• Relationship established
• Ready to scale if needed

Why this works:

You keep most volume discounts:

• 70% volume usually maintains tier pricing
• Small premium on 30% is insurance cost

Secondary supplier is proven:

• Not theoretical, actually delivering
• Quality verified
• Communication tested
• Can ramp to 100% if needed

Competitive pressure:

• Primary knows they don't have 100%
• Keeps pricing honest
• Motivates good service

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How to Identify Your Critical SKUs

You can't multi-source everything (too expensive, too complex). Focus on critical SKUs first.

Critical SKUs are products where disruption would immediately hurt revenue.

How to identify them:

Step 1: Run Revenue Analysis

Pull report from your system:

• All SKUs sorted by revenue (last 12 months)
• Cumulative percentage

You're looking for the 80/20 rule:

• Top 20% of SKUs typically = 80% of revenue
• These are candidates for multi-sourcing

Example:

You have 2,400 SKUs. Top 480 SKUs (20%) generate $12M of your $15M revenue (80%).

Start with these 480 SKUs.

Step 2: Filter for Single-Sourced Items

Of those 480 critical SKUs, which have only ONE supplier?

Example:

Of 480 critical SKUs:

• 320 have multiple suppliers already (lower priority)
• 160 have only one supplier (HIGH PRIORITY)

Focus on these 160 single-sourced critical SKUs.

Step 3: Prioritize by Lead Time

Longer lead time = harder to recover from disruption.

Sort your 160 single-sourced SKUs by lead time:

12+ weeks lead time (45 SKUs): HIGHEST PRIORITY 8-12 weeks lead time (60 SKUs): HIGH PRIORITY
4-8 weeks lead time (40 SKUs): MEDIUM PRIORITY Under 4 weeks (15 SKUs): LOWER PRIORITY

Your top 10-20 SKUs: Single-sourced + high revenue + long lead time

These are your critical vulnerabilities. Start here.

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Finding Alternate Suppliers: A 4-Week Process

Don't try to find alternates for all 160 SKUs at once. Start with top 10.

Week 1: Research & Outreach

For each of your top 10 critical SKUs:

Search for alternate suppliers:

• Industry trade shows (best source)
• Alibaba/Global Sources (for imports)
• ThomasNet (for USA manufacturers)
• LinkedIn (ask your network)
• Trade associations (industry directories)

Contact 3-5 potential suppliers:

Email template:

Subject: Request for Quote - [Product Name]  
Hi [Supplier],  
We're a [Industry] distributor currently purchasing [Product] and exploring alternate suppliers for supply chain resilience.  Current volume: [X units/month] Initial test order: [Y units]  Could you provide: 1. Price quote for test order 2. Lead time 3. MOQ (minimum order quantity) 4. Payment terms 5. Sample availability  Thank you, [Your Name]

Goal: Get quotes from 3 suppliers by end of week 1.

Week 2: Sample Testing

Order samples from 2-3 promising suppliers:

What to test:

• Quality (meets specifications?)
• Packaging (arrives undamaged?)
• Documentation (correct paperwork?)
• Communication (responsive? professional?)

Example:

For hydraulic pumps, Mark ordered samples from 3 suppliers:

Supplier A (Vietnam):

• Quality: Excellent
• Price: +15% vs current
• Lead time: 8 weeks
• Communication: Slow (48hr response)

Supplier B (Mexico):

• Quality: Good
• Price: +8% vs current
• Lead time: 6 weeks
• Communication: Excellent (4hr response)

Supplier C (USA):

• Quality: Excellent
• Price: +30% vs current
• Lead time: 3 weeks
• Communication: Excellent

Mark's choice: Mexico (Supplier B) as secondary. Good quality, reasonable premium, fast lead time.

Week 3: Test Order

Place small test order with chosen alternate:

Test order size: 1-2 months of normal demand

Why small?

• Limit risk if quality issues
• Test full process (ordering, shipping, receiving, invoicing)
• Don't commit too much before proven

What to evaluate:

• Did they deliver on promised lead time?
• Was quality consistent with samples?
• Were there any shipping issues?
• Was invoicing correct?
• How was communication during the order?

Document everything. You're evaluating a potential long-term partner.

Week 4: Implement 70/30 Split

If test order successful, implement ongoing split:

Month 1: 90% primary, 10% alternate (ease into it) Month 2: 80% primary, 20% alternate Month 3+: 70% primary, 30% alternate (target state)

Communicate with primary supplier:

Be transparent. Don't hide it.

"We're implementing supply chain resilience by diversifying  our sourcing. You'll continue to receive 70% of our volume.  This protects both of us from disruptions and keeps our  business strong long-term."

Most suppliers understand. It's smart business.

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Managing the 70/30 Split Long-Term

How to allocate orders:

Don't alternate orders (Order 1 to primary, Order 2 to alternate). This creates lumpy demand.

Instead, split every month proportionally:

Example:

Monthly demand: 1,000 units

Order 1 (Primary): 700 units
Order 2 (Alternate): 300 units

Both suppliers get consistent, predictable volume.

Track performance:

Use supplier scorecards to track:

• On-time delivery rate
• Quality issues
• Communication
• Pricing competitiveness

If primary supplier underperforms, shift more volume to alternate.

Review quarterly:

Every 3 months, ask:

• Is 70/30 still the right split?
• Should we shift ratios based on performance?
• Do we need to add a third supplier?

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Real-World Example: Electronics Distributor Survives Taiwan Chip Shortage

Company: Electronics distributor, $22M revenue, 1,800 SKUs

Situation (2021):

• Single-sourced 24 critical IC chips from Taiwan
• 18-week lead times
• Supplier announced 6-month capacity constraint (couldn't fulfill full orders)

What they did:

Month 1: Identified alternates

• Found 3 alternate suppliers (Malaysia, South Korea, USA)
• Requested samples
• USA supplier had best quality but 30% price premium

Month 2: Tested quality

• All three passed quality tests
• USA supplier fastest lead time (8 weeks vs 18)

Month 3: Implemented split

• 60% Taiwan (as much as they could get)
• 25% USA (premium but reliable)
• 15% Malaysia (backup to backup)

Results:

When Taiwan supplier hit capacity constraints:

• Ramped USA supplier to 70% of volume
• Maintained customer orders
• Zero stockouts during 6-month shortage

Meanwhile, competitors:

• Single-sourced from Taiwan
• Couldn't get supply
• Lost $2M+ in sales

Cost of multi-sourcing:

• USA supplier premium: +$180K annually

Benefit:

• Avoided $2M+ revenue loss
• Kept customers (competitors lost them)
• Strengthened relationships with 3 suppliers

ROI: 11x return on the premium paid.

CEO quote: "The $180K premium felt expensive until we watched our competitors lose millions. Now it's the cheapest insurance we've ever bought."

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Common Objections (And How to Overcome Them)

Objection 1: "My primary supplier will be angry"

Response: Frame it as partnership protection.

"This protects both of us. If you have a disruption, I can maintain orders through my alternate, which means I stay in business and continue buying from you long-term."

Most suppliers understand. Those who don't? Red flag.

Objection 2: "I'll lose my volume discounts"

Response: 70% volume usually maintains tier pricing.

Run the math:

• Current: 1,000 units/month at $10 = $10,000
• After split: 700 units at $10 + 300 units at $11 = $7,000 + $3,300 = $10,300

Extra cost: $300/month = $3,600/year

Value of insurance: Prevents $225K disaster

Worth it? Absolutely.

Objection 3: "It's too much work to manage multiple suppliers"

Response: It's 30 minutes more work per month.

With primary supplier only:

• 1 PO per month
• 1 receiving process
• 1 relationship to manage

With 70/30 split:

• 2 POs per month
• 2 receiving processes
• 2 relationships

Extra time: ~30 minutes per month

If you use inventory software (like AssetBlaze), it auto-populates supplier data. Creating the second PO takes 60 seconds.

Objection 4: "What if the alternate supplier is worse quality?"

Response: That's why you test BEFORE you need them.

The 4-week qualification process ensures:

• Samples tested
• Test order verified
• Quality confirmed BEFORE you commit

Don't wait until emergency to find out quality is bad.

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Your Action Plan: Multi-Source Your Top 5 SKUs in 30 Days

Week 1:

• Run revenue report (identify top 20% SKUs)
• Filter for single-sourced items
• Pick top 5 by revenue + lead time
• Research 3 alternate suppliers per SKU

Week 2:

• Request quotes from alternates
• Order samples
• Test quality

Week 3:

• Select best alternate per SKU
• Place test orders (small quantities)
• Document performance

Week 4:

• If successful, implement 70/30 split
• Set up regular ordering schedule
• Communicate with both suppliers

30 days from now, you'll have backup suppliers for your 5 most critical SKUs.

6 months from now, you'll have multi-sourced your top 20 SKUs.

When the next disruption hits, you'll keep operating while competitors scramble.

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Continue the Series

Previous: The Wholesale Distributor's Guide to Supply Chain Resilience (Overview)

Next: The Safety Stock Calculator: How Much Inventory Should You Really Keep?

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How AssetBlaze Makes Multi-Sourcing Easy

Managing multiple suppliers for the same SKU used to be complex. Not anymore.

AssetBlaze lets you:

✅ Link multiple suppliers to one SKU

• See all supplier options when creating POs
• Compare pricing, lead times, on-time rates

✅ Track supplier performance automatically

• On-time delivery rate per supplier
• Quality issues logged
• Lead time trends

✅ Split orders with one click

• Create 70/30 split POs automatically
• No manual calculations

✅ Alert when primary supplier underperforms

• "Supplier A's on-time rate dropped to 82%"
• Prompt to shift more volume to alternate

Over 2,500 distributors use AssetBlaze to manage multi-supplier strategies.

Start Free → No credit card required. Setup in 5 minutes.