AEROSUN-TOLA is a Sino-Japanese joint venture between AEROSUN Corporation and TECHNOFLEX Corporation. AEROSUN Corporation, a public limited company initiated in 1999 by Nanjing Chenguang Group originated from 1865, started to produce bellows in 1966. AEROSUN is the largest bellows elements manufacturer in China. AEROSUN-TOLA has become the leading expansion joint manufacturer in China and a global expansion joint manufacturer. Our expansion joints are widely used in many countries all over the world and most major industries such as electric power (fuel, hydro, nuclear), petroleum, chemical, iron & steel and non-ferrous metallurgy, cement, building, heat supply and OEM, etc. AEROSUN-TOLA is a sole expansion joint manufacturer in China certified with EJMA member, ISO9001, ASME U stamp, design and manufacture license of special equipment (pressure piping), design and manufacture license of civil nuclear security equipment (expansion joints). AEROSUN-TOLA all the time strives to supply quality expansion joints and flexible solutions to meet various customers' demands. Based on its capabilities and development program, AEROSUN-TOLA has diversified its products from expansion joints only into wide ranges of pressure vessels, chimneys, pipes supports and pressure piping engineering,pressure vessels etc.