In 2013, BTWM developed independently the PET mylar insulation enameled CTC，and has passed Hebei province technology and science achievement identify, and obtained the third award of technology and science progress of China Weapon and Equipment Group, the second award of Baoding technology and science progress. It is the CTC with PET mylar thin film as the insulation materials and with the properties of fireproof, anti-explosion and applied in the gas insulation transformers.
