text: Local B local 65-55\ !~.Tempered glass A foceign (1) 6S\ yea. patents,designs an~ ·. ( ?) dcawinga u.iuc tubes A for:ei~n (1) 15-20\ ,yes technical assistance (l960s) tr:ade-•ar:ks Local B local(•any) 85-80\ u~,.apes for: con- A foreign. (l) 45\ yea patents and technical ·cr:eU joints. assistance roa:eign B foreign (1) local (1) 50\ 5\ l5.Galvanised aater:- A foreign (U 27\ yes technical advice ials (1918) local (1) 18\ no patents and tech. assistance s::l ror:eign B local (laany• 55\ 16.Paint,lacquer:a A for:eign (l) 27\ yea tr:ade-.ar:k,patents and · and var:nisher:a stocking equipment . (1880&) Local B local (U 69\ fo.:eign (l) 4\ 17.Lime A local (1) 16\ no patents ' . (1880&). Local B for:eign (1) 1\ local ( .. ny) 11\ 18.Aluminiu• bats A t'or:eign (1) 45\ yea technical assistance and sections ' ( ?) (?) B fote·ign (2) 55\ 2650 19.CeJDent A (1880s) Local B foreign (1) 14\ :(,) local (uny) 86\ ,I .... 20.Round reinforcing A a>.re (1943) Local B foreign (1) 8\ local (uny) 92\ ,TABU 2 REASONS USED BY NATIONAL FIRMS TO JUSTifY IMPORTING TECHNOI..OGI CAL: ASSETS Nature of contract Setting up new Industr­ Ial plant or extension of existing plant Integration of new pro­ ducts Into the firm 2650 --~----- Reasons given for contract Technical assistance derives from a tie with the supplier of the equJp­ •ent who was approached, a) because of lack of sources b) because It owns patented processes which had been used earlier In the recipient fir• (J.e.tor technical continuity) and c) due to tbe·hfgh coats and risks l11plled by local dev~lop•ent (ass­ essed In terms of a very ll•lted market)slnce new Innovations or extensions In plant Jn the sector are sporadic 1) To deal with obstructive patents 2) Acquisition of brands and patents In a system with high R&D costs In 
analysis: This text appears to be related to the importation of technological assets by national firms, specifically mentioning patents, technical assistance, and equipment. The context suggests that the firms are seeking to acquire new technologies or improve their existing ones, which is a common strategy in the industry sector. The text also mentions the reasons why firms choose to import technical assets, such as the lack of local sources, patented processes, and high costs and risks associated with local development.