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52

マルハチ産業(maruhachisangyou)

Worth a look

Shows low returns (0.5%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.

Market size 53Growth 57Conversion 16Competition 85Returns 98Price range 0Avg price 0Brand share 0Review moat 46Quality gap 96

Returns

Incredible0.5%

return rate — above 5% kills the launch gate

Quality gap

Incredible3.9★

avg incumbent rating — lower means beatable quality

Competition

Great30%

top-5 click share — an open shelf

Growth

Good+31.1%

90-day search growth — must beat 0% to launch

Market size

Good¥334K

¥334K/yr · 26K searches

Review moat

Okay1,886.83

avg incumbent reviews — the moat a new listing must climb

Conversion

Bad1.3%

search→purchase rate — share of searches ending in a sale

Brand share

Bad100%

top-5 brand share — brand-locked demand

Avg price

Bad¥997.81

avg listing price — sweet spot $15–$100

Price range

Bad¥252.20–¥9216.64

cheapest to priciest tracked listing — scored on the share inside $15–$100

According to Flapen's Amazon Japan niche tracking, マルハチ産業(maruhachisangyou) is a ¥334K/yr Amazon Japan market (26K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in May–Jun–Jul. Verdict: Worth a look — 52/100.

Data updated Jul 30, 2026 · scored weekly · How we score niches

マルハチ産業(maruhachisangyou) market data

Units sold / yr
500–750
avg 0–100/product
Revenue / yr
¥499K–¥748K
units × avg price
Conversion rate
1.3%
Avg BSR
#126
Page quality
0%
Prime
98%
Sponsored
62%
Out of stock
1.0%
Avg brand age
47 months
Avg seller age
188 days

Competition & brand share

Clicks spread well past the top 5 (30% combined) — an open shelf where new products get seen.

Brands

4 rising

Sellers

96

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

30%

Top 20: 73%

Open market

0%

  • マルハチ産業(Maruhachisangyou)96%
  • YAMYONE2%
  • Uervoton1%
  • ホテル旅館洗剤専門店スリーエス3S1%
  • Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +31.1% search growth over the last 90 days.
1K600Spike '24Holiday '24Spike '25Black Friday '25Spike '26Prime Day '26SepDecMarJunAugNovMarMay

Peak months: May, Jun, Jul · busiest ÷ quietest = 2.4×

Top マルハチ産業(maruhachisangyou) products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%3%¥10K6%¥20K9%¥30K12%¥40K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

What buyers say about マルハチ産業(maruhachisangyou)

What buyers praise and complain about, mined from review topics.

What buyers love

使用の容易さ26%

“シンプルイズベスト”

スプレー/フロー19%

“透明スプレー最高”

コストパフォーマンス7%

“お値段もちょうどよかったです。”

耐久性5%

“長持ちします”

サイズ全体4%

“小ささがちょうどいい”

清掃の容易さ4%

“エアコンの掃除、草花の害虫駆除薬の散布等に大きさも手軽く使えて便利です。”

総合品質3%

“良すぎ”

快適さ-全体3%

“履き心地最高です。”

2%

“カラーが良く着に入っています。”

漏れ防止2%

“水漏れもなく問題なく使用できています。”

What buyers complain about

スプレー/フロー21%

“この手のスプレーは何個も使っていますが、こんなに粗い水滴なのは初めてです。普通の霧吹きよりも粗い。”

漏れ防止14%

“水が漏れる最悪”

耐久性12%

“後は耐久性だけ。100均のはすぐ壊れるのでこれには期待している。”

サイズ全体6%

“キャップは小さく感じるが”

使用の容易さ5%

“使えない. キャップがしっかり閉まらない。閉めたらまたゆるむ。それの繰り返し。ちゃんと閉まらないし、このボトルを倒したりしたら全て中身は溢れるでしょう。使い物になりません。”

水に強い3%

“全く水が出ません。”

総合品質3%

“ゴミです”

機能全体3%

“トリガが戻らなくなった”

清掃の容易さ2%

“汚いし使う気になれません。”

強さ2%

“割れやすい”

Top return reasons

スプレー/フロー32%
漏れ防止17%
水に強い10%
機能全体9%
不良材料/部品8%
湿式洗浄3%
商品の状態3%
サイズ全体2%
耐久性2%
2%

Common questions

Is マルハチ産業(maruhachisangyou) profitable to sell on Amazon Japan?
The niche generates ¥334K/yr across 52 tracked products. 8 of 12 products launched in the last 360 days are still selling. 90-day search growth is +31.1%. Flapen's verdict: Worth a look (52/100).
How competitive is the マルハチ産業(maruhachisangyou) niche?
4 brands and 96 sellers compete. The top 5 products take 30% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in マルハチ産業(maruhachisangyou)?
Top complaints mined from reviews: スプレー/フロー, 漏れ防止, 耐久性. The return rate is 0.5%.
When does demand for マルハチ産業(maruhachisangyou) peak?
Demand peaks in May–Jun–Jul; the busiest month runs 2.4× the quietest.
What does it cost to enter the マルハチ産業(maruhachisangyou) niche?
Listings span ¥252.20–¥9216.64; the average listing price is ¥997.81 (sweet spot $15–$100). The average incumbent carries 1,887 reviews — the moat a new listing must climb.