Start from left Executive Director of Hong Kong Shipbuilding, Machinery Manufacturing and Steel Industries Employees General Union  Mr. Tse King-wa, Chairman of HKFTU Mr. Wong Kwok, CEO of Wo Lee Group Mr. Lai Ngok Wai and Chairman of Welding Industry Employees Association Mr. Tsoi Yik Piu on The 70th Anniversary of The Hong Kong Federation of Trade Unions and the Exhibition of the Big Bay Area.