 The other golf equipment manufacturers soon followed Ping's innovations, which became industry standards.The last major innovation by PING during the 1960s came with K1 stainless cast steel iron set.During a White House meeting between US President Donald Trump and Norwegian Prime minister Erna Solberg on January 10, 2018, Solberg gave Trump a Ping "Bergen" Putter as a gift as a symbol of the close ties between Norway and the USA, and the history of Norwegian immigration to the US.