Buenas,
hoy he visto en un folleto de publicidad que las cajas y correas de resina de casio estan echas de ‘Urethane’. Buscando en google he encontrado esto:
“Studies with rats, mice, and hamsters has shown that urethane will cause cancer when it is administered orally, injected, or applied to the skin, but no adequate studies of urethane-caused cancer in humans has been reported (IARC,1974). The International Agency for Research on Cancer has stated that urethane can be “reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity in experimental animals.” (NTP 2005). This evaluation has led to the following US regulatory actions:” En la wikipedia
Joe, lo que encuentra uno en el internete
Saludos