Why the Shift from “Buy One Get One” to 1‑Yuan Exchange Is About Transparency, Not Cost Savings

In 2009 Kangshifu launched the “Buy One Get One” (再来一瓶) promotion, which helped its beverage division achieve a 32.14% year‑over‑year revenue increase and cement its channel dominance. The tactic relied on consumers instantly redeeming a free bottle by returning the cap, creating a rapid lift in purchase frequency.

However, the model proved fragile. Retailers had to front the cost of the free bottle, then wait one to three months for reimbursement, straining cash flow. Brands faced a “data black hole” because they could not track who redeemed the offer, where, or when, leading to fee leakage—industry insiders estimate over 20% of promotional spend disappears in the channel.

Dongpeng’s “1‑Yuan Exchange” (一元换购) rewrites this script with digital QR codes. Consumers scan the cap, win a chance, and pay ¥1 at the store to receive the product. The store instantly receives a ¥1 cash reward via a mobile app (T+0 settlement), turning the retailer from a cash‑flow debtor into an immediate profit earner.

A typical scenario shows shop owners proactively reminding customers, “Scan the cap, win, and I’ll give you the product,” turning the retailer into a promoter rather than a passive participant. The system also captures the consumer’s location, time, and profile, giving brands a real‑time view of sales, user demographics, and redemption patterns.

Because each redemption is linked to a unique QR code, brands can trace every ¥1 spent to a specific store ID, GPS coordinate, and consumer OpenID. This eliminates the “black hole” of untracked caps, enables precise control of win rates, and directs spend toward the most effective outlets.

Dongpeng’s platform integrates the consumer (C‑side) and retailer (B‑side) into a seamless bC‑integration layer. The data collected supports a new channel evaluation system that classifies stores as high‑ or low‑efficiency, allocates incentives such as shelf space or electricity subsidies to top performers, and phases out underperforming locations.

The digital exchange thus evolves from a simple sales boost to a full‑stack channel operating system: it provides end‑to‑end traceability of each bottle, informs product R&D with regional taste insights, guides channel layout with heat‑maps, and enables hourly iteration of marketing tactics instead of monthly reviews.

In summary, the evolution from “Buy One Get One” to 1‑yuan exchange is not about cutting promotional spend but about making every yuan visible, measurable, and optimizable, turning promotional costs into a transparent, data‑driven growth engine.