Pair International Corporation originated from the historical chemical factory "大春化學工廠股份有限公司" which extended its business from chemical industry to the environmental protection industry in 1987. In 1990, Pair International Corporation was established. Its business projects focus on not only kitchen environmental protection equipment related to food waste, oily water and kitchen waste water but also the research and development, design, construction, consultation, biotechnological research and development of food waste fertilizer factory–installation units.

The transformation of kitchen waste into organic fertilizers or feed was originally the company’s ultimate goal of organic waste recycling in the early stage. In recent years, the use of food waste has become more extensive and diversified due to the changes in global trends. The company has kept up with the times, combined with different industries, reallocated manpower, committed to the long-term development and integrated marketing of green energy, environmental protection, organic agriculture and fishery in order to contribute to Taiwan's economy.

The main products under the Pair brand include food waste separators, food waste recycling machines, automatic solid waste separation units, automatic oil-water separators, kitchen wasteater treatmet systems, household wastewater treatment and recycling systems, food waste fertilizer factory-installation units, factory air and water pollution prevention systems.

Related machines for food waste separators / food waste recycling machines / food waste fertilizer factory-installation units inlude mincers for ships and kitchens, food waste separators, food waste granulation machines, fully automatic food waste recycling machines, solid-liquid separation dehydrators, automatic bucket lifting machines, vibration screening machines, parallel foreign object screening machines, fruit and vegetable waste crushers, food waste shredder, food waste grinder, track conveyors, spiral conveyors, food waste dryers, stirring mixer, solid fertilizer fermentation system, liquid fertilizer fermentation system, biological deodorization filter tower, food waste fertilizer factory-installation units and related equipment for air and water pollution prevention systems.