●Eco-Friendly-Minimized Resource Consumption
●Dimension:
Tongbao: DN36*thickness 6±1mm
Base-acrylic：40*26*25mm
●Material: Medium carbon steel, gold plated (24k gold)
●Made in Taiwan
This product is only available for customization. The following parts can be customized:
There are two parts to the front customization: The first part is the square hole in the middle of the Tongbao. We will use seal script to engrave the customer's name in the middle, giving it a unique value!
The second part is the outer area, using circular writing to show the affiliation of each Rotary partner, and we can also engrave the date for you if needed.
The Rotary Club logo is displayed on the back, and the English name of the Rotary Club is engraved on the outside.
History of Tongbao- The first emperor who unify currency
The circular copper coin with a square hole can be traced back to the Qin Dynasty. In 221 BCE, after Emperor Qin Shi Huang unified China, he standardized the currency across the realm. Following the "same law" and "same currency" principle, he consolidated the various currencies of the six kingdoms—including cloth money, knife money, round coins, and bronze cowries—into a unified circular coin with a square hole. This standardization laid the foundational basis for copper-cast currency in China and ushered in the prosperous Han and Tang dynasties.
"Using Qin currency throughout the realm" spread the "Heaven Round, Earth Square" coin design, making it more widespread and universally accepted.
Due to ancient limitations in understanding the relationship between heaven and humanity, Emperor Qin Shi Huang ingeniously merged divine mandate with imperial power in the coin's design: the coin's round exterior (heaven) and square interior (imperial power).
The phrase "Within a single coin, the laws of heaven and earth are embodied" symbolizes the divine right of kings and the hope for eternal dynasties.
Successive emperors, beginning with Qin Shi Huang, shared this belief, hoping that these coins would serve as a divine talisman, protecting their realms for generations.
The profound concept of "heaven is round, earth is square," embodied in the coins' circular shape and square hole, resonated with the people and contributed to their enduring popularity for over two millennia.
♻️ Eco-Friendly & Sustainable ♻️
This product is crafted from aerospace metal offcuts left over from precision machining. These materials are not of inferior quality; rather, their small size makes them unsuitable for larger parts. Typically, such scraps are melted down for recycling, a process that is energy-intensive and not environmentally friendly.
At Metal Arts, we embrace sustainability by repurposing these high-quality metal remnants. By preserving the machining marks and holes, we transform what would have been scrap into unique, meaningful products. This approach not only reduces waste but also gives each piece a one-of-a-kind character and cultural value.
Warranty/Return & Exchange Policy:
Metal Arts | Warranty/Return and Exchange Policy
Service Email: metalarts@kingteam.com.tw
Customer Service Line: 03-463-1683#2414
Address: No. 130, Xiyuan Road, Zhongli District, Taoyuan City 320,
Taiwan
Website: www.metalarts.com.tw
