Hong Kong’s century-old Hang Heung bakery has fallen victim to mooncake counterfeiters, customs has revealed after seizing 340 boxes of the bogus treats bearing the shop’s forged trademark, along with 200 fake redemption vouchers.The suspected ringleader of the enterprise accused of making the counterfeits in mainland China was held during a raid of a Yuen Long warehouse on Friday, senior superintendent Tse Kwok-keung, of Customs’ Intellectual Property Investigation Bureau, said on Monday.Green…