| 1980 | Establishment of Sun Sang Chemicals Processing Co., Ltd. and Sun Sang Plastic Material Co. Mainly concentrate on recycling of PS for usage of video cassette tape production. |
| 1982 | Establishment of Plastic Trading Division |
| 1997 | Our president, Mr. Ho Chan Hoi, was appointed as the president of Hong Kong Plastics Recycling Association Co., Ltd. |
| 1999 | Expansion of trading business worldwide |
| 2000 | Began to recycle disc scraps and reprocess them into recycled resin for CD, VCD and DVD production |
| 2004 | Further expansion of disc recycling and trading business worldwide |