carpenter trading
Carpenter Estates  

The Company has 1800 hectares of tea with 5 fully automated CTC factories, 1000 hectares of Arabica Coffee with 4 wet factories and the world famous "Sigri" Coffee Mill. Carpenters is the largest Producer/Exporter of Tea in PNG with over 80% of the country's exports. The company also exports 1.6 million kilos of high quality coffee per annum under the "Sigri" and "Bunum Wo" brand names.

Company Profile

Carpenter Estates is a tea and coffee growing, manufacturing and exporting company situated in the Wahgi Valley, in the Western Highlands Province of Papua New Guinea.

The tea and coffee is grown at 5000 feet (1600 metres) above sea level and the ideal weather conditions that prevail in the Waghi Valley allows us to produce tea and coffee of excellent quality. This has led to Sigri Coffee being ranked among the 10 best coffees in the world by leading experts in the USA and Europe. Coffee is exported in Green Bean bulk and in 250 gram "Sigri" packets. The tea is grown without the use of any chemical pesticides, a situation that does not prevail in any other Tea producing country. The Green Leaf is carefully selected and harvested by using the latest techniques in plantation management. The Black Tea which is to CTC (Cut, Tear, & Curl) manufacture is sorted to nine international grades and exported in bulk, and value added packets and Tea bags. Our coffee and Tea is also sold in the domestic market under the brand names "Sigri", "Bunum Wo" for coffee and National No.1', Tea Pot Tea' for tea packets and bags. The Tea is also exported under 'Mt Angalim' brand. The Company has a packing factory for Tea and Coffee with modern Tea Bagging/Packing machinery and coffee roasting facilities.

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Managed Small Holders

Carpenter Estates offers management and agriculture advice to locally owned smaller estates in the neighbourhood. Under this scheme we handle about 750 hectares of coffee.

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Social Responsibility

Community Relations

We have several schools in our plantations which cater to the needs of pre-school children of our workers.

  • We run an HIV/Aids awareness program with workshops and seminars in our area.
  • We have our own medical aid-posts on our plantations.
  • We maintain local roads and bridges.
  • We help in tertiary education with bursaries.
  • We help church groups to help in the spiritual upliftment of our people.


  • We consider soil and water conservation as a priority
  • Our plantations are bird and eco friendly.

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A cup of superbly flavourful Sigri coffee is the culmination of a series of stages in its production, beginning with the planting of the coffee seedlings through to the final roasting and packaging of the beans and dispatch to those who appreciate the very finest.

Sigri plantation, was established in the 1950s and rapidly gained a reputation that has continued to grow with Sigri being internationally recognised as producing a gourmet coffee equal to the world's best for more than 20 years.

All plantings are exclusively Arabica, concentrating on the Typica varieties which produce a finer coffee than other Arabicas in Papua New Guinea

We own and operate six Arabica Coffee Plantations and (2) coffee mills


Main crop for May to July

We offer our coffee in Bulk and Packet Form to major markets in:-

  • United States of America
  • Germany
  • Australia
  • Japan
  • France
  • Spain
  • Sweden
  • Singapore
  • Canada
  • New Zealand

All growing and processing practices follow a system which has been throughly proven over many years, and insists on the highest standards and quality at every stage.

All coffee bearing the Sigri name is a washed Arabica coffee and undergoes a rigorous wet factory process. Quality Control begins in the field; Cherry coffee is hand-picked and carefully checked for uniformity; it must be red and fully ripe which allows for the correct balance of sugar and acid within the cherry. This selected cherry is then pulped on the day of picking.

A fermentation process follows, a period of three days broken every 24 hours by washing - but unlike most other brands, the Sigri process follows this by total immersion in water for a further day, which creates a superior blend.



All Sigri coffee is sun dried to further enhance the flavour.

Careful conditioning, hulling, grading and hand sorting follows.

This combined with rigorous quality control and a final hand sort before packing produces the finest green been for which Sigri is renowned.

All grades are then continuously sample-roasted and liquored by experts. This provides a final check on the quality of the green bean product, and is a practice unique in Papua New Guinea.

The bulk of the production is sold to France and Germany, noted as discerning buyers, and to specialist gourmet roasters in the USA. Over the years considerable quantities of Sigri coffee have been re-exported from Europe to Japan.

Years of experience, time-proven methods of growing and processing, and the most stringent attention to maintaining standards and quality control have resulted in the production of one of the finest, washed Arabica roasted coffees on the world market today.

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In the Waghi Valley, Carpenter Estates own and operate five Tea Plantations, each with its own factory. These properties were developed from phragmites swamp country in the mid 1960's. Almost all the equipment used, was air freighted into the valley, as these were the days before the road system in the highlands was fully developed.The tea produced is of the best quality in the region and compares favourably with tea of India, Indonesia and African origin.

Carpenter's tea factories manufacture tea of the CTC (or Cut, Tear and Curl) process, a totally 'Natural' type of manufacture. This tea is highly suitable for tea bags, which are popular particularly in developed countries.

The tender leaves and buds are harvested from fields either by hand or machine and initially withered in large withering troughs utilizing hot air or ambient air to reduce the surface and internal moisture content, inducing a change in the leaf chemistry.

The withered leaf is then fed through machines known as Rotovanes to prepare the leaf for the CTC process.

We own and operate five (5) Tea Plantations each with it's own factory


Tea available in Bulk Packets and Tea Bags and are marketed in major markets in:-

South Africa
United States of America
United Kingdom
New Zealand
United Arab Emirates

Our CTC (Cut, Tear and Curl) tea process is highly suitable for Tea Cup or Pot Bags

  • The unique feature of our tea is it's pesticide free
  • Tea available in bulk and value added form

The Quadruplex CTC machines macerates the rolled leaf by cutting, tearing and curling to bring out the inherent enzymes and promote the next process which is fermentation.

Fermentation or oxidization takes place for about 80 minutes during which the processed tea turns from a bright green pigmentation to a coppery brown colour. Once fermentation is completed, a carefully judged moment in time, the leaf is fed into fluidized bed dryers. The dryers are fuelled by Naphta, which is a by-product of the natural gas industry, situated to the West of Waghi Valley. Naphta is one of the cleanest burning fuels available, so this ensures that there are no noxious vapours absorbed by the tea during the direct fire-drying process.

The availability of Naphta enables the company to be at the forefront of using alternative fuel supplies to stem the rapidly diminishing timber resources.

The familiar black tea, which emerges from the dryer, is passed through a series of screens and meshes and graded into various sizes. The graded tea is then packed into paper sacks, which have replaced the traditional tea chest, and invoiced for for export or value addition.

The entire tea manufacturing process is mechanized and fully automated. Therefore the hygienic standards are high.

Furthermore there are no chemical pesticides used by the company in their husbandry of tea growing, another environmentally friendly feature.

The rich soil and ideal climate conditions of the Waghi Valley contribute to the success of these tea plantations, which are rapidly promoting Papua new Guinea's reputation as a leading producer of quality tea to meet a growing demand throughout the world.

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A major portion of the Carpenter's production is exported to Europe, Australia and USA with small quantities being shipped to the Middle East, Africa and Sri Lanka.

Around 10 percent of the tea manufactured by Carpenter's is packed in "Value added" form.

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