negotiations to new achievements. In this respect, I would also like to assure you and all other delegations of the constructive co-operation of the Chinese delegation. I would also like to avail myself of this opportunity to convey my warm welcome to the new heads of delegations, Ambassador Kralik of the Czech and Slovak Federal Republic, Ambassador Sinegeorgis of Ethiopia, Ambassador Ricupero of Brazil, Ambassador Chadha of India and Ambassador von Wagner of the Federal Republic of Germany. I sincerely wish them success in their new capacities. At the same time I would also like to express through you, Mr. President, the feeling of sadness of the Chinese delegation and of myself for the departure of Ambassador de Azambuja of Brazil, Ambassador Sharma of India, Ambassador von Stiilpnagel of the Federal Republic of Germany, Ambassador Kostov of Bulgaria, Ambassador Bayart of Mongolia and Ambassador Varga of Hungary. We wish them all the best. Mr. President, under your presidency, this plenary meeting has just adopted by consensus a decision on the re-establishment of the Ad hoc Committee on item 1 of the agenda of the Conference, namely "Nuclear test ban". This marks a new progress made by the Conference in this field of great importance. The Chinese delegation would like to extend its congratulations to you and to all other delegations and express its appreciation for your energetic and effective inspirations, as well as the spirit of compromise manifested by all sides. Here I would like to mention in particular the tireless and unyielding efforts made by the distinguished Ambassador of Japan, Mr. Donowaki. The Chinese delegation congratulates the representative of Japan, a close neighbour of China, on his assumption of the chairmanship of the Ad hoc Committee and hopes that under his guidance the Ad hoc Committee will achieve substantive results.
**Analysis**
The text appears to be a speech or statement made by a representative of the Chinese delegation at an international conference, likely a United Nations Conference on Disarmament. The speech focuses on the progress made in the field of nuclear non-proliferation, specifically the re-establishment of an Ad hoc Committee on a nuclear test ban. The text also mentions the assumption of new heads of delegations and the departure of previous representatives. The tone is diplomatic and congratulatory, with expressions of appreciation and wishes for success.

**Category**
International trade, Science and technology