TWSBI
TWSBI is a writing-instrument brand created by TaShin Precision, a manufacturer with over 50 years of experience in plastics and metals.
Last updated September 15, 2026
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Overview
TWSBI is the own-brand writing-instrument line of TaShin Precision, which began selling under its own brand after more than 50 years as an OEM manufacturer for global brands. The company states over 50 years of experience in manufacturing with plastics and metals, with early products ranging from toy lego parts to high end writing instruments. The name TWSBI derives from the phrase "Hall of Three Cultures" or "San Wen Tong" in Chinese, with the initials reversed to "TWS" and "Bi" added for its literal meaning of writing instruments. The brand's stated mission is to inspire and recapture the romanticism of art and literature starting with the pen, through precision writing instruments, products tailored to customer wants and needs, and dedicated customer service. Its product range includes piston-filler and vacuum-filler fountain pens such as the TWSBI Kai and Vac700R Iris, as well as ink bottles, inks, pen accessories, and leather pen cases.
History
TWSBI was born after TaShin Precision, which had spent more than 50 years as an OEM manufacturer for different global brands, decided to start selling under its own brand. TaShin Precision states over 50 years of experience in manufacturing with plastics and metals, and its early products ranged from toy lego parts to high end writing instruments; this knowledge is described as trickling down into every TWSBI product. The brand name stands for the phrase "Hall of Three Cultures" or "San Wen Tong" in Chinese, where the character "Wen" translates into language and culture. The phrase also brings to mind the Hall of the Three Rare Treasures created by Emperor Qianlong as a memorial to three great masterpieces of Chinese calligraphy. The initials of "San Wen Tong" were reversed into "TWS", and the letters "Bi" were added with their literal meaning of writing instruments, combining into TWSBI.
Products and positioning
Precision writing instruments aimed at inspiring the romanticism of art and literature, with products tailored to customer wants and needs.
TWSBI Kai Fountain Pen
Piston filler type fountain pen with acrylic cap, grip, body and end cap, rose gold nib, clip and rings; a limited run special edition available in EF, F, M and B nib sizes.
TWSBI Vac700R Iris Fountain Pen
Vacuum filler type fountain pen with a new titanium finish, an ink shut off valve for easy carry and no spill mess, and nib sizes EF, F, M, B, Stub1.1 and Stub1.5.
TWSBI Kai Leather Pen Cases
Leather roll case produced with a small specialty leather factory in Himeji, Japan, using genuine leather processed and dyed in Himeji, handcrafted and sewn into a roll case with 5 pen slots and a zip sleeve.
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