https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
High Temperature Polyurethane RFID Tags

High Temperature Polyurethane RFID Tags

GID Technology Inc.
Region: Taiwan
Update: 03/27/2007
Key Specifications
Polycarbonate tag containing for high temperature rugged environments containing a RFID module and antenna

Mechanical dimensions:

Diameter / Hole / Thickness

;20mm ∮ 0.2mm / - / 2.2mm ∮ 0.3mm

;25mm ∮ 0.2mm / 3mm ∮ 0.2mm / 3.2mm ∮ 0.3mm

;30mm ∮ 0.2mm / 3mm ∮ 0.2mm / 2.2mm ∮ 0.3mm

Chip Type:

;Atmel series, EM series, Hitag series, I-code series, Mifare series

Electrical:

;LF operating frequency: 125kHz* ∮ 6kHz

;HF operating frequency: 13.56MHz Reader Standard (ISO/IEC 15693, ISO/IEC 14443)

Temperature:

;Storage: -25C to +115C

;Operating: -25C to +75C

Material:

;Polycarbonate half shell housing

;Copper wire antenna and module potted in polyurethane

;Enclosure rating: IP67

Options:

;Colour: white, black or blue

;Code printing: colour white or black

;1 side logo printing, adhesive backing, custom housing

Packaging:

;Delivered in shrink wrapped foil and packed in a box

Type Number:

;TGU-XX (Polyurethane Tag, XX denotes IC)

*frequency adjustment 100kHz~150kHz

https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions