What are the three major garbage plants in Suzhou?

There are many garbage factories, such as:

Kecheng/Kesheng/Keli, Lian Jian, Elite Computer (formerly known as He Zhi Computer), Dahong Optoelectronics (moved to Xiamen University), BenQ Materials (formerly known as Daxin Technology), Weilimeng Electronics (formerly known as Wei You), Flextronics Electronics (formerly known as Xudian), Asus Electronics, Xinmingya Electronics (small factory),

Many factories have changed their names for reasons you know.