Textile experts attending a clothing fair in Humen City in south China's Guangdong Province urged the country's clothing producers to pay heed to environmental protection in the process of clothing manufacturing and use of fibre materials. The design and manufacturing standards of the clothing industry in China lag behind that of western countries and many producers have not developed awareness of the environmental problems caused by the industry, experts said at the fifth China Humen International Garment Fair - one of the largest Chinese womenswear exhibitions.