Kenya
In 2003, HVA International elaborated a five year strategy for the development of the smallholder tea sector in Kenya, financed by IFC. The aim was to develop smallholder tea production in relation to planned expansion of tea processing capacity in the Gucha District. The strategy took into account actual and planned production, comparative advantages and market development and served as a basis for establishing an effective strategic planning unit within the Kenya Tea Development Agency Ltd (KTDAL).
In 1972 HVA conducted a feasibility study for the Subukia Tea Company in Kenya and in 1974 for Kapchorua Tea Company, of which HVA became shareholder and managing agent until 1983.

Ethiopia
The first factory at Wush Wush in the highlands of Ethiopia was constructed in 1986-1988 with engineering assistance provided by Bohea. A tea agronomist introduced new clonal tea varieties raised by tissue culture in the UK. Advice on management and maximising output was given and training in all aspects of the industry.
Since 1997 HVA International has provided technical assistance and training in the field of tea marketing, tea factory engineering and tea making for the Wush Wush II Tea Project in Ethiopia, financed by the African Development Bank. The assignment includes consulting engineering for the equipping and commissioning of a second tea factory in the area.

Rwanda
From 1995-1998 Bohea has been the consulting engineer for the rehabilitation of four tea factories in Rwanda damaged during the war in 1994. (financed by the EU). As a result of the successful rehabilitation Rwanda has regained its leading position in the market for the provision of high quality African teas.
In 1990 HVA was commissioned by the African Development Bank to prepare Terms of Reference for a tea sector study in Rwanda and a feasibility study for the construction of a new factory at Nshili-Kivu. Later (from 1993) HVA carried out both studies. The last part of the sector study was a privatisation study of the tea industry. This study was carried out in 1999.
In 1977, H.G.Th Crone and HVA brought about the Association for the Construction of the Ramba-Gaseke tea factory in Rwanda, financed by the African Development Bank on behalf of l'OCIR-Thé in Kigali. In 1979 HVA International, in association with H.G.Th Crone constructed the Ramba tea factory. This factory has been producing tea of high quality ever since.

Nigeria
In the mid 1970s Bohea designed and established Nigeria’s first commercial tea project comprising a 450ha irrigated estate on the Mambilla plateau.
From 1993-1997 HVA International provided technical assistance and procurement services for the Mambilla Tea Integrated Development Programme (MTIDP) in Nigeria. The main components of the assignment included rehabilitation and expansion of the existing tea estate (from 450ha to 850ha) and out-grower tea plantings (from 140ha to 400ha, rehabilitation, modernisation and expansion of the tea factory (from 1,200t to 2,250t made tea per annum) strengthening the out-grower farmers association and training management, operational and extension staff. Although the program was suspended in 1997, for political reasons, most of the rehabilitation and a considerable part of the expansion was completed, including the construction of an irrigation system covering nearly 500ha. The modernisation of the factory and training of staff has resulted in much better tea quality. The project. was of great benefit to the smallholder tea farmers.

Turkey
In 1992 HVA carried out a survey of the tea industry in Turkey and made recommendations regarding factory and field rehabilitation programmes.

Indonesia
In 1999 HVA International carried out an evaluation study and future implementation plan for a private client of over 6,000 ha tea plantations and factories in East Sumatra, Indonesia, in connection with the imminent privatisation of the Government owned tea plantations.
In 1989 managerial and technical assistance was rendered to private tea and rubber estates in the Bandung area. In the same year, a fact-finding mission was fielded to evaluate involvement of smallholders in the West Java Tea Rehabilitation project, Indonesia. The mission was funded by the Asian Development Bank.
In 1987, HVA, also in association with PT Wiga Guna, carried out a feasibility study for a new tea project on an abandoned tea estate in the Province of Bengkulu, Sumatra, Indonesia. A bankable report was prepared.
In 1986 HVA was commissioned by the Netherlands Government to carry out a review of 25 private estates in West Java, Indonesia, in order to draw up a development plan for rehabilitation of plantations and factories. This study was executed in association with PT Wiga Guna, Jakarta.

Uganda
In 1986 HVA International carried out a nation-wide study for the rehabilitation of the tea industry in Uganda and was subsequently entrusted by the World Bank with the execution of the rehabilitation. The project concerned rehabilitation of seven tea factories on a turnkey basis as well as management assistance for a period of four years. An HVA team of eight members was stationed in Uganda during that time. Another nation-wide survey in Uganda covered the rehabilitation and identification of input requirements of out-growers in the tea sector for 11,000 farmers and 7,000ha planted tea, spread over seven districts. This study was carried out in 1985 and financed by the EU.

Sri Lanka
From 1986-1987 H.G.Th Crone implemented the project Energy Saving in the Tea Industry of Sri Lanka, financed by DGIS. This project formulated recommendations on how to save electric and thermal energy in the tea industry, the major foreign exchange earner of Sri Lanka.

Peru
From 1977-1985 H.G.Th Crone implemented a rehabilitation programme for the tea industry in Peru (financed by DGIS the Dutch agency for international co-operation). The rehabilitation involved both plantation and factory of two tea estates (Jardines de Té and Té-Café del Peru in the Tingo Maria area). In addition a new factory Central Té Huyro for producing export quality tea was constructed. Clonal tea varieties from Africa, introduced by the project have been extremely successful.