Alibaba.com offers 247 hard clam products. such as free samples. There are 233 hard clam suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Vietnam, and Pakistan, which supply 90%, 6%, and 1% of hard clam respectively. Hard clam products are most popular in North America, Western Europe, and Eastern Asia. You can ensure product safety by selecting from certified suppliers, including 85 with Other, 51 with ISO9001, and 47 with HACCP certification.