ACTIVISTS yesterday renewed calls for a boycott of Kader Industrial toys following a factory fire that killed 188 Thai workers, and claimed the company's factories in China were unsafe. More than 60 local Thai workers marched on Chater Garden in Central, singing songs around a mock black coffin and burning a Kader symbol. Tien Chua, spokesman for the Hongkong-based Coalition in Support of Thai Kader Workers, said international protests finally forced a compensation settlement on July 14 but action must be increased to ensure safety in the future. ''We don't want Kader to think they have just bought our silence, we must look to the future and make sure their new factories are better,'' Mr Chua said. Coalition member Shek Ping said he used unofficial contacts to get inside two southern Chinese factories owned by subsidiaries of Kader Industrial (Hongkong). ''Both were still unsafe even after all those deaths,'' he said. ''I saw unfinished products cluttering up the corridors and fire escapes, there was no way people could flee a fire.''