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Ransom & Randolph 
New Investment Powder Technology

At R&R, we are committed to using premium grade raw materials to develop our jewelry products; ensuring the highest quality and consistency for our customers. 

Made in USA

R&R’s BANDUST technology reduces respirable dust during investing – up to 99% versus standard materials.

In identical testing conditions, conventional investment materials (left) release noticeably more fine dust than BANDUST technology jewelry investments (right).

Up to 99% reduction in respirable dust exposure during investing
Less total dust overall during the investing process
Excellent final casting results

R&R® Plasticast® Investment

Strength for plastic and rapid prototype pattern materials.

PLASTICAST investment provides jewelry casters using plastic and wax/plastic pattern materials with a mold material that meets the high expansion demands of the pattern material while maintaining mold surface and dimensional integrity.

Plasticast® PT Investment & Binder

One of Bootstrap 4's big points

A water-based, two-part system for casting rapid prototype pattern materials and high temperature alloys. PLASTICAST PT investment & binder is a high expanding, extra high strength investment ideally suited for investing and burnout of commonly used plastic or wax/plastic pattern materials. It is compatible with standard wax patterns for high temperature metal casting. PLASTICAST PT investment & binder maintains mold surface and dimensional integrity for high temperature metal casting, eliminates acid-based binder hazard associated with common two-part platinum investments and eliminates special investing flask preparation requirements.

Ultra-Vest® Investment

Proven quality, consistent results for casting gold, silver, brass and bronze.

ULTRA-VEST investment is accepted by jewelry casters as being the most process forgiving product available for casting – saving casters time and money. ULTRA-VEST investment provides easy quench and easy cleanup, reducing your risk of losing valuable metal. ULTRA-VEST investment produces smoother surfaces than other investments, resulting in less finishing.

R&R® Platinum Investment & Binder

Quality Platinum result

Acid-based binder mixed with investment for casting platinum alloys. R&R PLATINUM investment and binder provides platinum casters with a consistent, acid-based binder that does not separate, resulting in smoother, more consistent casting surface finish than other two-part platinum products.

Our vision is to provide our customers  the most innovative machinery  with manufacturing techniques and processes with cutting edge technologies proven from around the world with our local knowledge for the Great China Market and Southeast Asia. 

Hong Kong, China-based Kingsway Jewelry Supplies Co Ltd serves as a distributor of alloys and equipment for a number of major brands in Asia. Gilbert Kwok, managing director of the company, shares with JNA the qualities that make Kingsway an ideal partner for jewellery-manufacturing equipment and materials in the region.

We have been a major supplier of casting and melting machines in Asia for more than three decades.

We keep a close eye on the latest industry developments, from electronics to modern engineering technology. By doing so, we are able to identify the technologies, which we believe would better serve the needs of the jewellery industry.


Kingsway mission statement is to accelerate the technology advancement, efficiency and scalability of the jewelry industry in Asia by offering best softare/hardare and international experience. 

We excel not only in China but also have experience throughout Asia. 


Kingsway is only a engineering company wants to link its decades of trade experience, knowledge network and local Asian knowledge to serve our customers with better, more efficient and new processes of tomorrow. 

We never counterfeit or copy our supplier products or customer designs to make quick money. 

In the jewelry world, Kingsway is the firm that you can trust. 

Based in Hong Kong, China, Kingsway has been serving all our customers with integrity and decades of  trade specific experience.


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