This varies in importance between products, and is more concentrated in manufacturing than in agriculture-related GVCs, in which international trade remains important but GVCs tend to play a more limited role. However, LDCs are able to exploit niche markets in agriculture, especially through arm's-length trade. Considerable growth in contract farming has helped to integrate some smallholders into GVCs, helping to alleviate some compliance constraints, though often relegating smallholders to positions with weak bargaining power.