About us

The Journey to Becoming

Rungjaroen

Mr. Song Weng Sae Ow was born in 1912 in Teochew, China

At the age of 21, Mr. Song Weng migrated to Bangkok to seek work opportunities. He began working as an employee at a factory producing silver, gold, and copper items. Drawing from his previous experience as a silversmith in China since 8 years old, and being a hardworking and eager-to-learn person, he was soon able to advance his position to become the head craftsman. Eventually, Mr. Song Weng decided to resign from his employee position and opened his own factory manufacturing silver, gold, and copper jewelry, utilizing the knowledge and experience he had gained, under the name "Ow Seng Huat".

In 1978

The Major Turning Point Occurred

Gold and silver prices surged to several times their normal rates. Gold prices, which were normally 2,000 baht per baht weight, skyrocketed to 5,000-5,500 baht per baht weight. Silver prices, which were normally 60-70 baht per baht weight, increased to approximately 200+ baht per baht weight. These price changes caused people who owned silver belts, gold, and copper items to bring out their jewelry to sell in large quantities. When people brought their gold, silver, and copper items to sell at gold shops, this became the turning point for Mr. Song Weng. When each piece of jewelry from different brands was tested for gold percentage, it was revealed that jewelry stamped with"Seng Huat 成發" contained high-standard gold content, causing gold shops to purchase Seng Huat 成發 jewelry at higher prices than other brands. After that, the Seng Huat 成發 brand became renowned for having high pure gold content mixed in their products. Mr. Song Weng's Seng Huat 成發 jewelry sold in such large quantities that production couldn't keep up with customer demand, and the brand gained a reputation for honesty and trustworthiness that has continued ever since.

From the Era of Mr. Song Weng

The expertise in producing gold jewelry, gold-plated items, and the unwavering commitment to honesty with customers of
Seng Huat 成發 has been passed down to Mr. Song Weng's descendants under the brand Rungjaroen.

From a small factory that upheld the principle of honesty with customers

The business was able to distribute products to many provinces such as Sing Buri, Ang Thong, Ayutthaya, Lopburi, Uthai Thani, Nakhon Sawan, and other provinces in the Central region. Products under the brand "Seng Huat 成發" expanded with more designs and patterns. Mr. Song Weng began producing gold-plated earrings, rings, and other items. When Seng Huat 成發 jewelry became well-known, several competing factories emerged. These factories used the method of reducing gold percentage and selling products at prices lower than Seng Huat 成發, causing Mr. Song Weng's business to decline. However, Mr. Song Weng continued to uphold the principle of honesty by refusing to compromise the quality of his materials or reduce prices to compete with rivals.