Nonetheless, Arconic advised in one brochure seen by Reuters that combustible cladding materials were a fire risk in tall buildings and that above 30 metres non-combustible materials should be used.
Thousands of residents in London have been cleared from 650 flats on similar safety grounds following the deadly London blaze.
Anxiety about the building materials appeared to be spreading to other countries, even though the United States and most countries in Europe had restrictions on the kind of cladding used on Grenfell Tower.
Mrs May's call came as Cabinet was informed 95 samples of cladding from tower blocks in 32 English local authority areas have failed fire safety tests - amounting to 100 per cent of all samples submitted by councils.
The cladding on the 95 buildings will nearly certainly have to be replaced.
An estimated 600 tower blocks in England are believed to have cladding similar to that used on the 24-storey tower in west London, which was devastated in a blaze on June 14 that left 79 people presumed dead.
A "major national investigation" into the use of flammable cladding on tower blocks stretching back decades has been ordered by the prime minister in the wake of the Grenfell disaster. ARMA said it was in the process of contacting members to confirm how many had done so.
German media reported that at least 70 other buildings would be tested in Wuppertal alone.
Next week, pupils from 28 different primary schools across the two boroughs will also learn the importance of fire safety when they attend the annual Safety in Action event, which runs from July 4 to July 13.
Stuart Ropke, chief executive of CHC, said: "It is hard to imagine the impact that the horrific fire in Grenfell Tower has had on residents and the loved ones of those who lost their lives".
The council has assured there is no immediate safety risk to tenants but will remove the cladding immediately as a precaution.
Fire inspectors have reviewed Wuppertal's roughly 70 high-rise buildings, according to spokeswoman Martina Eckermann, since the London fire, which killed at least 79 people.
This post was syndicated from The Guardian Nigeria Newspaper - Nigeria and World News.
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