WST is the pioneering company in household waste treatment, realizing the concept of 3R- Reduce, Recycle and Reuse. Patents for this proprietary technology are held in the United States, China, Taiwan, Singapore, etc. WST patents have also been filed in accordance with the patents Cooperation Treaty (PCT) in June 2004. In 2003, WST technology obtained the Endorsement Certificate from the Science and Technology Department in Jiangsu Province of China and was recognized as a “Leading Technology in the world”.

WST PATENT LISTINGS
Country	Title of invention	Patent No.
U.S.A.	Waste Disposal Apparatus	US6,193,178 B1
	Apparatus of piercing garbage bags and classifying garbage	US6,955,265 B2
	Apparatus and method of separating medium-sized materials from garbage for collection	US6,962,255 B2
	Apparatus and method of separating plastic films from garbage for collection	US6,994,221 B2
	Apparatus and method of separating small rubbish and organic matters from garbage for collection	US7,017,752 B2
	Apparatus and method of separating heavy materials in garbage from light ones and classifying the heavy garbage for collection	US7,017,753 B2
	Apparatus for piercing garbage bags and collecting non-rigid, elongate objects and powder	US7,416,084 B2
	Apparatus for piercing garbage bags, washing materials released from the pierced garbage bag, and collecting non-rigid, elongate objects and powder	US7,497,337 B2
In 2001- 2005, obtained United States Invention Patents
China	Waste Disposal Method & Apparatus	ZL 98117498.1
	Apparatus of piercing garbage bags and garbage screening	ZL02129187.X
	Apparatus of piercing garbage bags and garbage screening	ZL03102224.3
	Apparatus and method of separating small rubbish and organic matters from garbage for collection	ZL03102220.0
	Apparatus and method of separating medium-sized materials from garbage for collection	ZL03102221.9
	Apparatus and method of separating heavy materials in garbage from light ones and classifying the heavy garbage for collection	ZL03102223.5
	Apparatus and method of separating plastic films from garbage for collection	ZL03102222.7
	Apparatus of piercing garbage bags, collection of soft & long materials, dust & sand	ZL200410037535.2
In 2004, obtained China Invention Patents
Taiwan	Waste Disposal Method & Apparatus	139019
	Apparatus of piercing garbage bags and classifying garbage	I242474
	Apparatus and method of separating heavy materials in garbage from light ones and classifying the heavy garbage for collection	I228059
	Apparatus and method of separating medium-sized materials from garbage for collection	I230097
	Apparatus and method of separating plastic films from garbage for collection	I230099
	Apparatus and method of separating small rubbish and organic matters from garbage for collection	I230100
	Apparatus for piercing garbage bags and collecting non-rigid, elongate objects and powder	I275420
In 2001, obtained Taiwan Invention Patents
Singapore	Apparatus of piercing garbage bags and classifying garbage	116727
	Apparatus and method of separating medium-sized materials from garbage for collection	116728
	Apparatus and method of separating heavy materials in garbage from light ones and classifying the heavy garbage	116729
	Apparatus and method of separating plastic films from garbage for collection	116732
	Apparatus and method of separating small rubbish and organic matters from garbage for collection	116734
In 2004, obtained Singapore Invention Patents
* Applications in EPC, GCC, Japan, Australia and more than 40 countries are in progress.