Singapore 738068. Phone +65-6266-6193. Fax +65-6266-6579. Sales Department E-Mail: asia-sales@proplas.com. Asia Business Manager: Wilson Tan. Torlon, Semitron, Ultem, PEEK, Macor, Tygon, Turcite, Vespel & Meldin - PC350. Largest Inventory of Engineering Plastic Sheets, Rods & Tubing in Singapore.